Update flaky tests action to version 0.3.1 (#359)

Author: Stummi

.github/workflows/template_flaky_tests.yml

@@ -35,7 +35,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: Find flaky tests
-        uses: Staffbase/github-action-find-flaky-tests@v0.3.0
+        uses: Staffbase/github-action-find-flaky-tests@v0.3.1
         with:
           slack-channel-id: ${{ inputs.slack-channel-id }}
           slack-channel-name: ${{ inputs.slack-channel-name }}