chore: Upgrade actions/upload-artifact (#421)

* chore: Upgrade `actions/upload-artifact`

* Trigger CI

Author: lahirumaramba

.github/workflows/nightly.yml

@@ -66,7 +66,7 @@ jobs:
     # Attach the packaged artifacts to the workflow output. These can be manually
     # downloaded for later inspection if necessary.
     - name: Archive artifacts
-      uses: actions/upload-artifact@v1
+      uses: actions/upload-artifact@v4
       with:
         name: Release
         path: FirebaseAdmin/FirebaseAdmin/bin/Release

.github/workflows/release.yml

@@ -77,7 +77,7 @@ jobs:
     # Attach the packaged artifacts to the workflow output. These can be manually
     # downloaded for later inspection if necessary.
     - name: Archive artifacts
-      uses: actions/upload-artifact@v1
+      uses: actions/upload-artifact@v4
       with:
         name: Release
         path: FirebaseAdmin/FirebaseAdmin/bin/Release