[main] Update actions

.github/workflows/knative-boilerplate.yaml

@@ -42,10 +42,10 @@ jobs:
 
     steps:
 
-      - name: Set up Go 1.15.x
+      - name: Set up Go 1.16.x
         uses: actions/setup-go@v2
         with:
-          go-version: 1.15.x
+          go-version: 1.16.x
         id: go
 
       - name: Check out code

.github/workflows/knative-go-build.yaml

@@ -27,7 +27,7 @@ jobs:
     name: Build
     strategy:
       matrix:
-        go-version: [1.15.x]
+        go-version: [1.16.x]
         platform: [ubuntu-latest]
 
     runs-on: ${{ matrix.platform }}
@@ -43,7 +43,13 @@ jobs:
       - name: Check out code
         uses: actions/checkout@v2
 
+      - id: go_mod
+        uses: andstor/file-existence-action@v1
+        with:
+          files: go.mod
+
       - name: Build
+        if: ${{ steps.go_mod.outputs.files_exists == 'true' }}
         run: |
           tags="$(grep -I  -r '// +build' . | \
                 grep -v '^./vendor/' | \
@@ -55,5 +61,4 @@ jobs:
                 tr '\n' ' ')"
 
           echo "Building with tags: ${tags}"
-          go test -vet=off -tags "${tags}" -run=^$ ./... | grep -v "no test" || true
-
+          go test -vet=off -tags "${tags}" -exec echo ./...

.github/workflows/knative-go-test.yaml

@@ -31,7 +31,7 @@ jobs:
     name: Unit Tests
     strategy:
       matrix:
-        go-version: [1.15.x]
+        go-version: [1.16.x]
         platform: [ubuntu-latest]
 
     runs-on: ${{ matrix.platform }}

.github/workflows/knative-releasability.yaml

@@ -36,8 +36,8 @@ jobs:
     env:
       #########################################
       #   Update this section each release.   #
-      RELEASE: 'v0.22'
-      SLACK_CHANNEL: 'release-22'
+      RELEASE: 'v0.23'
+      SLACK_CHANNEL: 'release-23'
       #########################################
 
     steps:
@@ -54,10 +54,10 @@ jobs:
             echo "SLACK_WEBHOOK=exists" >> $GITHUB_ENV
           fi
 
-      - name: Set up Go 1.15.x
+      - name: Set up Go 1.16.x
         uses: actions/setup-go@v2
         with:
-          go-version: 1.15.x
+          go-version: 1.16.x
 
       - name: Install Dependencies
         run: GO111MODULE=on go get knative.dev/test-infra/buoy@main
@@ -110,25 +110,15 @@ jobs:
           # If we don't run `git status` before the "git diff-index" it seems
           # to list every file that's been touched by codegen.
           git status
-          FOUND_DIFF=0
-          for x in $(git diff-index --name-only HEAD --); do
-            if [ "$(basename $x)" = "go.mod" ]; then
-              continue
-            elif [ "$(basename $x)" = "go.sum" ]; then
-              continue
-            elif [ "$(basename $x)" = "modules.txt" ]; then
-              continue
-            fi
-            echo "Found non-module diff: $x"
-            FOUND_DIFF=1
-            break
-          done
+
+          CHANGED="$(git diff-index --name-only HEAD --)"
 
           # If we see no changes after the upgrade, then we are up to date.
-          if [[ "$FOUND_DIFF" -eq "0"  ]]; then
+          if [[ "$CHANGED" == "" ]]; then
               echo "VERIFY_MESSAGE=${{ github.repository }} up to date." >> $GITHUB_ENV
           else
               echo "VERIFY_MESSAGE=${{ github.repository }} is out of date." >> $GITHUB_ENV
+              echo "The following files are changed: $CHANGED"
               echo 'current=false' >> $GITHUB_ENV
           fi
 

.github/workflows/knative-release-notes.yaml

@@ -41,7 +41,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v2
         with:
-          go-version: 1.15.x
+          go-version: 1.16.x
 
       - name: Install Dependencies
         run: GO111MODULE=on go get k8s.io/release/cmd/release-notes

.github/workflows/knative-style.yaml

@@ -40,10 +40,10 @@ jobs:
           importpath: golang.org/x/tools/cmd/goimports
 
     steps:
-      - name: Set up Go 1.15.x
+      - name: Set up Go 1.16.x
         uses: actions/setup-go@v2
         with:
-          go-version: 1.15.x
+          go-version: 1.16.x
         id: go
 
       - name: Check out code
@@ -89,10 +89,10 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - name: Set up Go 1.15.x
+      - name: Set up Go 1.16.x
         uses: actions/setup-go@v2
         with:
-          go-version: 1.15.x
+          go-version: 1.16.x
         id: go
 
       - name: Check out code

.github/workflows/knative-verify.yaml

@@ -27,7 +27,7 @@ jobs:
     name: Verify Deps and Codegen
     strategy:
       matrix:
-        go-version: [1.15.x]
+        go-version: [1.16.x]
         platform: [ubuntu-latest]
 
     runs-on: ${{ matrix.platform }}