Update release-drafter/release-drafter action to v7 (#162)

* Update release-drafter/release-drafter action to v7

* Fix release-drafter config for v7

Signed-off-by: Alexander Brandes <mc.cache@web.de>

---------

Signed-off-by: Alexander Brandes <mc.cache@web.de>
Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Alexander Brandes <mc.cache@web.de>

Author: renovate[bot]

.github/release-drafter.yml

@@ -1,2 +1,2 @@
-_extends: .github
+_extends: github:jenkinsci/.github:/.github/release-drafter.yml
 tag-template: parent-$NEXT_MINOR_VERSION

.github/workflows/release-drafter.yml

@@ -11,6 +11,6 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       # Drafts your next Release notes as Pull Requests are merged into "master"
-      - uses: release-drafter/release-drafter@v6
+      - uses: release-drafter/release-drafter@v7
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}