Use Maven 3.9.1 on GitHub

Author: slawekjaranowski

.github/workflows/maven.yml

@@ -9,5 +9,5 @@ jobs:
     name: Verify
     uses: apache/maven-gh-actions-shared/.github/workflows/maven-verify.yml@v3
     with:
-      ff-maven: "3.9.0"
-      maven-matrix: '[ "3.2.5", "3.9.0" ]'
+      ff-maven: "3.9.1"
+      maven-matrix: '[ "3.2.5", "3.9.1" ]'