Bump spring-io/spring-github-workflows

Bumps [spring-io/spring-github-workflows](https://github.com/spring-io/spring-github-workflows) from 13446d5ff064de382e6b5249eb85837a9d84b3eb to f6486bb64e3f7a13a43e499b53c978f3458f6620.
- [Release notes](https://github.com/spring-io/spring-github-workflows/releases)
- [Commits](spring-io/spring-github-workflows@13446d5...f6486bb)

---
updated-dependencies:
- dependency-name: spring-io/spring-github-workflows
  dependency-type: direct:production
...

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

.github/workflows/dependabot-automerge.yml

@@ -13,6 +13,6 @@ jobs:
     permissions: write-all
 
     # Until v6 is released
-    uses: spring-io/spring-github-workflows/.github/workflows/spring-merge-dependabot-pr.yml@13446d5ff064de382e6b5249eb85837a9d84b3eb
+    uses: spring-io/spring-github-workflows/.github/workflows/spring-merge-dependabot-pr.yml@f6486bb64e3f7a13a43e499b53c978f3458f6620
     with:
       mergeArguments: --auto --squash