Add github action to sync fork with upstream #6

	name: Merge Trilinos/trilinos/develop into E3SM-Project/trilinos/develop

	on:
	schedule:
	- cron: '0 0 * * *' # every day at midnight
	workflow_dispatch: # sync on button click

	jobs:
	merge-upstream-develop:

	runs-on: ubuntu-latest

	steps:
	- name: Show action trigger
	run: echo "The job was triggered by a ${{github.event_name}} event."
	- name: Get current date
	id: date
	run: echo "DATE=$(date +'%Y%m%d')" >> $GITHUB_OUTPUT
	- name: Check out the repository
	uses: actions/checkout@v4
	with:
	show-progress: false
	ref: develop
	- name: Add upstream repo
	run: git remote add upstream https://github.com/trilinos/trilinos
	- name: Fetch upstream repo
	run: git fetch upstream
	- name: Create branch
	run: git checkout -b update-develop-${{ steps.date.outputs.DATE }}
	- name: debug
	run: git remote -v
	- name: debug2
	run: pwd
	- name: debug2
	run: git branch -a \| grep develop
	- name: Merge upstream branch
	run: git merge --ff-only upstream/develop
	- name: Create Pull Request
	id: cpr
	uses: peter-evans/create-pull-request@v5
	with:
	branch: update-develop-${{ steps.date.outputs.DATE }}
	delete-branch: true
	base: develop
	title: Merge trilinos/develop into e3sm-project/develop
	body: Created by Github action
	- name: Merge Pull Request
	uses: peter-evans/enable-pull-request-automerge
	with:
	pull-request-number: ${{ steps.cpr.outputs.pull-request-number }}

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