Update actions to use latest versioci: use stable action versions to avoid resolution errorsns in vm_test.yml

Author: imshubham22apr-gif

.github/workflows/vm_test.yml

@@ -107,7 +107,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Harden the runner (Audit all outbound calls)
-        uses: step-security/harden-runner@v2.10.1
+        uses: step-security/harden-runner@v2
         with:
           egress-policy: audit
 
@@ -216,12 +216,12 @@ jobs:
           sudo make install
 
       - name: Download urunc artifact
-        uses: actions/download-artifact@fa0a91b85d4f404e444e00e005971372df9a8682 # v4.1.8
+        uses: actions/download-artifact@v4 # v4.1.8
         with:
           name: urunc-${{ matrix.arch }}
 
       - name: Download containerd-shim-urunc-v2 artifact
-        uses: actions/download-artifact@fa0a91b85d4f404e444e00e005971372df9a8682 # v4.1.8
+        uses: actions/download-artifact@v4 # v4.1.8
         with:
           name: containerd-shim-urunc-v2-${{ matrix.arch }}