chore: Pin dependency versions in workflows (#405)

Author: lamATnginx

.github/workflows/biome-lint.yml

@@ -15,7 +15,7 @@ jobs:
     steps:
       # Checkout the repository so the workflow has access to the code
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9 # v3.5.3
 
       # Run the run-biome.sh script
       - name: Run run-biome.sh

.github/workflows/playwright.yml

@@ -14,7 +14,7 @@ jobs:
         steps: 
           # Checkout the repository so the workflow has access to the code
           - name: Checkout code
-            uses: actions/checkout@v3
+            uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9 # v3.5.3
           - name: Setup Hugo
             uses: peaceiris/actions-hugo@75d2e84710de30f6ff7268e08f310b60ef14033f # v3.0.0
             with:
@@ -30,7 +30,7 @@ jobs:
                 echo "Playwright tests failed. Please view the Playwright report to see full error."
                 exit 1
               fi
-          - uses: actions/upload-artifact@v4
+          - uses: actions/upload-artifact@6f51ac03b9356f520e9adb1b1b7802705f340c2b # v4.5.0
             id: artifact-upload
             if: ${{ !cancelled() && failure() && steps.test-ui.conclusion == 'failure' }}
             with: