Migrate off PAT

[xiang17]

Announcement
Posted to Microsoft Open Source on Jun 5, 2026
Beginning June 30, 2026, PATs must have a lifetime of 1 week or less to align with Microsoft policy. You may need to update your process.

We still use PAT in the pull request helper:

ApplicationInsights-Java/.github/workflows/pull-request-helper.yml

Lines 13 to 17 in 30ac9f4

	- uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
	with:
	# this is the personal access token used for "git push" below
	# which is needed in order to trigger workflows
	token: ${{ secrets.PR_HELPER_GITHUB_TOKEN }}