Update gradle/actions action to v6.4.1

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/gradle-wrapper-validation.yml

@@ -26,4 +26,4 @@ jobs:
         runs-on: ubuntu-latest
         steps:
             - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
-            - uses: gradle/actions/wrapper-validation@3f5f9adaf7d9fecd50b5935e54106014257a94e6 # v6.4.0
+            - uses: gradle/actions/wrapper-validation@8da46b539cd8fe6ab27ca75128919a18d757604c # v6.4.1