Update GitHub Actions

* Node 16
* set-output -> $GITHUB_OUTPUT

.github/workflows/build.yml

@@ -91,8 +91,8 @@ jobs:
             if (!artifact[0].workflow_run?.head_sha)
               throw new Error(`Specified build doesn't have the head SHA attached`)
 
-            console.log(`::set-output name=sha::` + artifact[0].workflow_run.head_sha)
-            console.log(`::set-output name=branch::` + (artifact[0].workflow_run.head_branch || ``))
+            core.setOutput(`sha`, artifact[0].workflow_run.head_sha)
+            core.setOutput(`branch`, (artifact[0].workflow_run.head_branch || ``))
 
             console.log(artifact[0])
             await core.summary
@@ -344,18 +344,18 @@ jobs:
           test -d NorthstarNavs/navmesh
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v1
+        uses: docker/setup-buildx-action@v2
 
       - name: Login to GitHub Container Registry
-        uses: docker/login-action@v1
+        uses: docker/login-action@v2
         with:
           registry: ghcr.io
           username: ${{github.actor}}
           password: ${{github.token}}
 
       - id: build
         name: Build and push
-        uses: docker/build-push-action@v2
+        uses: docker/build-push-action@v3
         with:
           push: true
           context: .