Update Gradle Wrapper Validation action (elastic#131682)

The old one was failing from time to time. The new version has retry built-in so it hopefully solve the issue.

Author: jozala

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

@@ -9,5 +9,5 @@ jobs:
     name: "Validation"
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: gradle/wrapper-validation-action@699bb18358f12c5b78b37bb0111d3a0e2276e0e2 # Release v2.1.1
+      - uses: actions/checkout@v4
+      - uses: gradle/actions/wrapper-validation@ac638b010cf58a27ee6c972d7336334ccaf61c96 # Release v4.4.1