Rename gradle validation workflow (#13182)

Author: trask

.github/repository-settings.md

@@ -42,6 +42,7 @@ settings](https://github.com/open-telemetry/community/blob/main/docs/how-to-conf
   - Require status checks to pass
     - EasyCLA
     - `required-status-check`
+    - `gradle-wrapper-validation`
   - Block force pushes: CHECKED
 
 ### `cloudfoundry` branch

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

@@ -1,11 +1,14 @@
-name: "Validate Gradle Wrappers"
+name: Gradle wrapper validation
 
 on:
   push:
   pull_request:
 
+permissions:
+  contents: read
+
 jobs:
-  validation:
+  gradle-wrapper-validation:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2