Python: Update package versions

[giles17]

Motivation and Context

Description

Contribution Checklist

• The code builds clean without any errors or warnings
• The PR follows the Contribution Guidelines
• All unit tests pass, and I have added new tests where possible
• Is this a breaking change? If yes, add "[BREAKING]" prefix to the title of the PR.

[Copilot]

Pull request overview

Bumps the Python package release version to 1.0.0b260123 across the monorepo packages, updates the lockfile accordingly, and adds release notes for the new version.

Changes:

• Update version fields across python/pyproject.toml and multiple package pyproject.toml files to 1.0.0b260123.
• Refresh python/uv.lock entries (package versions, environment markers, and wheel URLs).
• Add 1.0.0b260123 release notes and update compare links in python/CHANGELOG.md.

Reviewed changes

Copilot reviewed 20 out of 21 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
python/uv.lock	Updates locked package versions/markers and adds additional wheel entries as part of the version refresh.
python/pyproject.toml	Bumps the main Python package version and pins agent-framework-core[all] to the new release version.
python/packages/redis/pyproject.toml	Bumps package version to 1.0.0b260123.
python/packages/purview/pyproject.toml	Bumps package version to 1.0.0b260123.
python/packages/ollama/pyproject.toml	Bumps package version to 1.0.0b260123.
python/packages/mem0/pyproject.toml	Bumps package version to 1.0.0b260123.
python/packages/lab/pyproject.toml	Bumps package version to 1.0.0b260123.
python/packages/foundry_local/pyproject.toml	Bumps package version to 1.0.0b260123.
python/packages/devui/pyproject.toml	Bumps package version to 1.0.0b260123.
python/packages/declarative/pyproject.toml	Bumps package version to 1.0.0b260123.
python/packages/core/pyproject.toml	Bumps package version to 1.0.0b260123.
python/packages/copilotstudio/pyproject.toml	Bumps package version to 1.0.0b260123.
python/packages/chatkit/pyproject.toml	Bumps package version to 1.0.0b260123.
python/packages/bedrock/pyproject.toml	Bumps package version to 1.0.0b260123.
python/packages/azurefunctions/pyproject.toml	Bumps package version to 1.0.0b260123.
python/packages/azure-ai/pyproject.toml	Bumps package version to 1.0.0b260123.
python/packages/azure-ai-search/pyproject.toml	Bumps package version to 1.0.0b260123.
python/packages/anthropic/pyproject.toml	Bumps package version to 1.0.0b260123.
python/packages/ag-ui/pyproject.toml	Bumps package version to 1.0.0b260123.
python/packages/a2a/pyproject.toml	Bumps package version to 1.0.0b260123.
python/CHANGELOG.md	Adds release notes for 1.0.0b260123 and updates compare links.

[markwallace-microsoft]

Python Test Coverage Report •

File	Stmts	Miss	Cover	Missing
TOTAL	17029	2563	84%

report-only-changed-files is enabled. No files were changed during this commit :)

Python Unit Test Overview

Tests	Skipped	Failures	Errors	Time
3317	213 💤	0 ❌	0 🔥	1m 2s ⏱️