Update gradle/wrapper-validation-action digest to 26ffd68

Author: renovate[bot]

.github/workflows/cd.yml

@@ -17,7 +17,7 @@ jobs:
           distribution: 'temurin'
           cache: 'gradle'
       - name: Validate Gradle wrapper
-        uses: gradle/wrapper-validation-action@ccb4328a959376b642e027874838f60f8e596de3
+        uses: gradle/wrapper-validation-action@26ffd686eccbbcbf168186b5363c8ee8edbe39f6
       - name: Build with Gradle
         run: ./gradlew clean build
       - name: Publish on Sonatype Nexus

.github/workflows/ci.yml

@@ -19,6 +19,6 @@ jobs:
           distribution: 'temurin'
           cache: 'gradle'
       - name: Validate Gradle wrapper
-        uses: gradle/wrapper-validation-action@ccb4328a959376b642e027874838f60f8e596de3
+        uses: gradle/wrapper-validation-action@26ffd686eccbbcbf168186b5363c8ee8edbe39f6
       - name: Run tests
         run: ./gradlew clean test