Drop 2.15 from supported branches

.github/workflows/scripts/release.sh

@@ -24,4 +24,5 @@ towncrier build --yes --version "${NEW_VERSION}"
 bump-my-version bump release --commit --message "Release {new_version}" --tag --tag-name "{new_version}" --tag-message "Release {new_version}" --allow-dirty
 bump-my-version bump patch --commit
 
-git push origin "${BRANCH}" "${NEW_VERSION}"
+# Git push is not atomic by default!
+git push --atomic origin "${BRANCH}" "${NEW_VERSION}"

.github/workflows/update_ci.yml

@@ -72,37 +72,6 @@ jobs:
         env:
           GH_TOKEN: "${{ secrets.RELEASE_TOKEN }}"
         continue-on-error: true
-      - uses: "actions/checkout@v6"
-        with:
-          fetch-depth: 0
-          path: "pulp_container"
-          ref: "2.15"
-
-      - name: "Run update"
-        working-directory: "pulp_container"
-        run: |
-          ../plugin_template/scripts/update_ci.sh --release
-
-      - name: "Create Pull Request for CI files"
-        uses: "peter-evans/create-pull-request@v8"
-        id: "create_pr_2_15"
-        with:
-          token: "${{ secrets.RELEASE_TOKEN }}"
-          path: "pulp_container"
-          committer: "pulpbot <pulp-infra@redhat.com>"
-          author: "pulpbot <pulp-infra@redhat.com>"
-          title: "Update CI files for branch 2.15"
-          branch: "update-ci/2.15"
-          base: "2.15"
-          delete-branch: true
-      - name: "Mark PR automerge"
-        working-directory: "pulp_container"
-        run: |
-          gh pr merge --rebase --auto "${{ steps.create_pr_2_15.outputs.pull-request-number }}"
-        if: "steps.create_pr_2_15.outputs.pull-request-number"
-        env:
-          GH_TOKEN: "${{ secrets.RELEASE_TOKEN }}"
-        continue-on-error: true
       - uses: "actions/checkout@v6"
         with:
           fetch-depth: 0

template_config.yml

@@ -104,7 +104,6 @@ stalebot_days_until_close: 30
 stalebot_days_until_stale: 90
 stalebot_limit_to_pulls: true
 supported_release_branches:
-  - "2.15"
   - "2.19"
   - "2.20"
   - "2.22"