Fix GitHub Actions:

golangci-lint was failing. Upgraded golangci-lint to v2 and
reordered it to first as a modified `go.mod` file was causing errors.
ref: golangci/golangci-lint-action#23 (comment)

Signed-off-by: Jacob Weinstock <[email protected]>

Author: jacobweinstock

.github/workflows/ci.yaml

@@ -14,16 +14,16 @@ jobs:
     - name: Install Go
       uses: actions/setup-go@v2
       with:
-        go-version: '1.14.6'
+        go-version: '1.15.5'
+    - name: golangci-lint
+      uses: golangci/golangci-lint-action@v2
+      with:
+        version: v1.32
+        args: -v -D errcheck
     - name: go fmt
       run: go get golang.org/x/tools/cmd/goimports && goimports -d . | (! grep .)
     - name: go vet
       run: go vet ./...
-    - name: golangci-lint
-      uses: golangci/golangci-lint-action@v1
-      with:
-        version: v1.30
-        args: -v -D errcheck
     - name: go test
       run: go test -v ./...    
     - name: go test coverage
@@ -58,6 +58,7 @@ jobs:
       uses: docker/setup-buildx-action@v1
     - name: Login to quay.io
       uses: docker/login-action@v1
+      if: ${{ startsWith(github.ref, 'refs/heads/master') }}
       with:
         registry: quay.io
         username: ${{ secrets.QUAY_USERNAME }}
@@ -69,4 +70,4 @@ jobs:
         file: ./Dockerfile
         cache-from: type=registry,ref=quay.io/tinkerbell/pbnj:latest
         push: ${{ startsWith(github.ref, 'refs/heads/master') }}
-        tags: ${{ steps.docker-image-tag.outputs.tags }}
+        tags: ${{ steps.docker-image-tag.outputs.tags }}