Bump deprecated gradle/wrapper-validation-action to v4

The v1 standalone action under gradle/wrapper-validation-action has been
deprecated and now fails. The action moved to gradle/actions/wrapper-validation
under the gradle/actions monorepo. Bumping to v4 unblocks CI on this PR
(check job was failing on the deprecated action across all 3 jobs that
used it: check, test matrix, upload-snapshots).

Pre-existing failure on main, surfaced by this PR.

Author: partha-uber

.github/workflows/build.yml

@@ -9,7 +9,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v2
       - name: Gradle Wrapper Validation
-        uses: gradle/wrapper-validation-action@v1
+        uses: gradle/actions/wrapper-validation@v4
       - name: Install JDK
         uses: actions/setup-java@v2
         with:
@@ -34,7 +34,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v2
       - name: Gradle Wrapper Validation
-        uses: gradle/wrapper-validation-action@v1
+        uses: gradle/actions/wrapper-validation@v4
       - name: Install JDK
         uses: actions/setup-java@v2
         with:
@@ -50,7 +50,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v2
       - name: Gradle Wrapper Validation
-        uses: gradle/wrapper-validation-action@v1
+        uses: gradle/actions/wrapper-validation@v4
       - name: Install JDK
         uses: actions/setup-java@v2
         with: