[gpr] Replace a call to localtime with a call to absl::FormatTime. #2

	name: EXPERIMENTAL -- Update artifacts branch

	on:
	push:
	branches:
	- master

	permissions:
	contents: write

	jobs:
	sync:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	with:
	ref: master
	fetch-depth: 0
	- name: Setup git user
	run: \|
	git config --global user.name "GitHub Actions"
	git config --global user.email "<EMAIL>"
	- name: Update artifacts branch
	run: \|
	git checkout master
	git fetch origin
	git checkout artifacts
	git reset master .
	git clean -fd
	git rev-parse master > .source-revision
	git add .
	git commit -m "Update artifacts branch"
	git push origin artifacts

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