Ignore deprication warnings from PHP

[vendion]

I know that this stems from an upstream issue, but currently the phpmd plugin fails as a lot of PHP deprecation warnings are also getting sent to STDOUT, which causes none-ls to fail as it is expecting pure JSON output.

[TRACE Sun 13 Jul 2025 11:36:31 AM EDT] /nix/store/3d2yf60cznhy5v3hq4afhjmf52rvzm02-vim-pack-dir/pack/myNeovimPackages/start/none-ls.nvim/lua/null-ls/helpers/generator_factory.lua:0: output:
Deprecated: PHPMD\Rule\CleanCode\BooleanArgumentFlag::isBooleanValue(): Implicitly marking parameter $value as nullable is deprecated, the explicit nullable type must be used instead in /nix/store/dnpxi9h9y9mr22pvkhnbmg647as3g81f-phpmd-2.15.0/share/php/phpmd/src/main/php/PHPMD/Rule/CleanCode/BooleanArgumentFlag.php on line 77

Deprecated: PHPMD\Rule\UnusedPrivateField::isValidPropertyNode(): Implicitly marking parameter $node as nullable is deprecated, the explicit nullable type must be used instead in /nix/store/dnpxi9h9y9mr22pvkhnbmg647as3g81f-phpmd-2.15.0/share/php/phpmd/src/main/php/PHPMD/Rule/UnusedPrivateField.php on line 150

Deprecated: PHPMD\Report::__construct(): Implicitly marking parameter $baselineValidator as nullable is deprecated, the explicit nullable type must be used instead in /nix/store/dnpxi9h9y9mr22pvkhnbmg647as3g81f-phpmd-2.15.0/share/php/phpmd/src/main/php/PHPMD/Report.php on line 61

Deprecated: PDepend\Source\Language\PHP\PHPBuilder::buildEnum(): Implicitly marking parameter $type as nullable is deprecated, the explicit nullable type must be used instead in /nix/store/dnpxi9h9y9mr22pvkhnbmg647as3g81f-phpmd-2.15.0/share/php/phpmd/vendor/pdepend/pdepend/src/main/php/PDepend/Source/Language/PHP/PHPBuilder.php on line 2592

Deprecated: PDepend\Source\Language\PHP\PHPBuilder::buildEnumCase(): Implicitly marking parameter $value as nullable is deprecated, the explicit nullable type must be used instead in /nix/store/dnpxi9h9y9mr22pvkhnbmg647as3g81f-phpmd-2.15.0/share/php/phpmd/vendor/pdepend/pdepend/src/main/php/PDepend/Source/Language/PHP/PHPBuilder.php on line 2612

Deprecated: PDepend\Source\Language\PHP\AbstractPHPParser::setNodePositionsAndReturn(): Implicitly marking parameter $tokens as nullable is deprecated, the explicit nullable type must be used instead in /nix/store/dnpxi9h9y9mr22pvkhnbmg647as3g81f-phpmd-2.15.0/share/php/phpmd/vendor/pdepend/pdepend/src/main/php/PDepend/Source/Language/PHP/AbstractPHPParser.php on line 2388

Deprecated: PDepend\Source\Language\PHP\AbstractPHPParser::throwUnexpectedTokenException(): Implicitly marking parameter $token as nullable is deprecated, the explicit nullable type must be used instead in /nix/store/dnpxi9h9y9mr22pvkhnbmg647as3g81f-phpmd-2.15.0/share/php/phpmd/vendor/pdepend/pdepend/src/main/php/PDepend/Source/Language/PHP/AbstractPHPParser.php on line 8073

Deprecated: PDepend\Source\AST\AbstractASTType::setTokens(): Implicitly marking parameter $startToken as nullable is deprecated, the explicit nullable type must be used instead in /nix/store/dnpxi9h9y9mr22pvkhnbmg647as3g81f-phpmd-2.15.0/share/php/phpmd/vendor/pdepend/pdepend/src/main/php/PDepend/Source/AST/AbstractASTType.php on line 401

Deprecated: PDepend\Source\AST\ASTMethod::setParent(): Implicitly marking parameter $parent as nullable is deprecated, the explicit nullable type must be used instead in /nix/store/dnpxi9h9y9mr22pvkhnbmg647as3g81f-phpmd-2.15.0/share/php/phpmd/vendor/pdepend/pdepend/src/main/php/PDepend/Source/AST/ASTMethod.php on line 196

Deprecated: PDepend\Source\AST\ASTArtifactList\CollectionArtifactFilter::setFilter(): Implicitly marking parameter $filter as nullable is deprecated, the explicit nullable type must be used instead in /nix/store/dnpxi9h9y9mr22pvkhnbmg647as3g81f-phpmd-2.15.0/share/php/phpmd/vendor/pdepend/pdepend/src/main/php/PDepend/Source/AST/ASTArtifactList/CollectionArtifactFilter.php on line 103

Deprecated: PDepend\Metrics\Analyzer\CouplingAnalyzer::calculateCoupling(): Implicitly marking parameter $coupledType as nullable is deprecated, the explicit nullable type must be used instead in /nix/store/dnpxi9h9y9mr22pvkhnbmg647as3g81f-phpmd-2.15.0/share/php/phpmd/vendor/pdepend/pdepend/src/main/php/PDepend/Metrics/Analyzer/CouplingAnalyzer.php on line 378

(JSON output from phpmd here)

[TRACE Sun 13 Jul 2025 11:36:31 AM EDT] /nix/store/3d2yf60cznhy5v3hq4afhjmf52rvzm02-vim-pack-dir/pack/myNeovimPackages/start/none-ls.nvim/lua/null-ls/diagnostics.lua:0: received diagnostics from source 2
[TRACE Sun 13 Jul 2025 11:36:31 AM EDT] /nix/store/3d2yf60cznhy5v3hq4afhjmf52rvzm02-vim-pack-dir/pack/myNeovimPackages/start/none-ls.nvim/lua/null-ls/diagnostics.lua:0: {}
[TRACE Sun 13 Jul 2025 11:36:31 AM EDT] /nix/store/3d2yf60cznhy5v3hq4afhjmf52rvzm02-vim-pack-dir/pack/myNeovimPackages/start/none-ls.nvim/lua/null-ls/diagnostics.lua:0: received diagnostics from source 10
[TRACE Sun 13 Jul 2025 11:36:31 AM EDT] /nix/store/3d2yf60cznhy5v3hq4afhjmf52rvzm02-vim-pack-dir/pack/myNeovimPackages/start/none-ls.nvim/lua/null-ls/diagnostics.lua:0: { {
    col = 0,
    end_col = 0,
    end_lnum = 1,
    lnum = 0,
    message = "phpmd error: cannot parse output as JSON.",
    severity = 1,
    source = "phpmd"
  } }

phpmd itself is currently being run using PHP 8.4 in my setup, I am aware of this issue upstream that is related just hoping there is an easy work around until version 3 of phpmd eventually releases.