chore: Adapt lint.sh to Windows Git Bash

[alexandear]

./script/lint.sh now works in Git Bash on Windows. Tested on a virtual machine with Windows 11 installed. This should improve the developer experience for contributors who don't use Windows Subsystem for Linux.

Before we have an issue:

$ ./script/lint.sh 
linting .
0 issues.
linting example
linting example
0 issues.
linting scrape
0 issues.
linting tools
0 issues.
linting tools/fmtpercentv
0 issues.
linting tools/sliceofpointers
0 issues.
linting tools/structfield
0 issues.
validating generated files
github\github.go:8: running "../script/metadata.sh": fork/exec ../script/metadata.sh: %1 is not a valid Win32 application.
failed validating generated files

Inspired by discussion comments in #3938.

[merchantmoh-debug]

@alexandear - My Hero!

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.45%. Comparing base (1c42933) to head (db98fcb).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #3950   +/-   ##
=======================================
  Coverage   92.45%   92.45%           
=======================================
  Files         203      203           
  Lines       14980    14980           
=======================================
  Hits        13850    13850           
  Misses        927      927           
  Partials      203      203           

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[gmlewis]

Thank you, @alexandear!
LGTM.
Merging.