Add actions: write permission to test-spring-find-release-version.yml

We need it for cancelling workflow: https://docs.github.com/en/actions/writing-workflows/choosing-what-your-workflow-does/controlling-permissions-for-github_token

Author: artembilan

.github/workflows/test-spring-find-release-version.yml

@@ -7,4 +7,6 @@ run-name: Release current version for branch ${{ github.ref_name }}
 
 jobs:
   test:
+    permissions:
+      actions: write
     uses: spring-io/spring-github-workflows/.github/workflows/spring-find-release-version.yml@main