[Dependencies]: Bump juliangruber/find-pull-request-action

Bumps [juliangruber/find-pull-request-action](https://github.com/juliangruber/find-pull-request-action) from 1.8.1 to 1.9.0.
- [Release notes](https://github.com/juliangruber/find-pull-request-action/releases)
- [Commits](juliangruber/find-pull-request-action@v1.8.1...v1.9.0)

---
updated-dependencies:
- dependency-name: juliangruber/find-pull-request-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/create-prs-for-stale-branches.yml

@@ -116,7 +116,7 @@ jobs:
 
       - name: "Find Existing PR"
         if: steps.detection.outputs.defaultbranch != matrix.branch
-        uses: juliangruber/find-pull-request-action@v1.8.1
+        uses: juliangruber/find-pull-request-action@v1.9.0
         id: find-pull-request
         with:
           branch: "${{env.BRANCH}}"

.github/workflows/pull-request.yml

@@ -57,7 +57,7 @@ jobs:
           fetch-tags: true
 
       - name: "Find PR For branch"
-        uses: juliangruber/find-pull-request-action@v1.8.1
+        uses: juliangruber/find-pull-request-action@v1.9.0
         id: findPr
         with:
           branch: ${{github.ref_name}}