Use latest v4 of GitHub Actions (#249)

Following on from hazelcast/hz-docs#1316, all
GitHub actions should use the latest `v4` rather than some hardcoded
sub-version.

.github/workflows/action-updater.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4.1.4
+      - uses: actions/checkout@v4
         with:
           # [Required] Access token with `workflow` scope.
           token: ${{ secrets.ACTION_UPDATER }}

.github/workflows/backport-v511.yml

@@ -12,7 +12,7 @@ jobs:
     steps:
 
       - name: checkout
-        uses: actions/checkout@v4.1.4
+        uses: actions/checkout@v4
         with:
          fetch-depth: 0
 

.github/workflows/backport.yml

@@ -12,7 +12,7 @@ jobs:
     steps:
 
       - name: checkout
-        uses: actions/checkout@v4.1.4
+        uses: actions/checkout@v4
         with:
          fetch-depth: 0
 

.github/workflows/validate.yml

@@ -13,8 +13,8 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v4.1.4
-    - uses: actions/setup-node@v4.0.2
+    - uses: actions/checkout@v4
+    - uses: actions/setup-node@v4
       with:
         node-version: 16
     - name: Check for broken internal links