Update pipelines to 1.21

Author: dviejokfs

.github/workflows/goreleaser-beta.yml

@@ -16,7 +16,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v2
         with:
-          go-version: 1.18
+          go-version: 1.21
       -
         name: Docker Login
         uses: docker/login-action@v1

.github/workflows/goreleaser.yml

@@ -16,7 +16,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v2
         with:
-          go-version: 1.18
+          go-version: 1.21
       -
         name: Docker Login
         uses: docker/login-action@v1

.github/workflows/test-kubectl-plugin.yml

@@ -8,7 +8,7 @@ jobs:
   kubectl-hlf:
     strategy:
       matrix:
-        go-version: [ 1.18.x ]
+        go-version: [ 1.21.x ]
         os: [ ubuntu-latest ]
     runs-on: ${{ matrix.os }}
     env:

.github/workflows/test.yml

@@ -7,7 +7,7 @@ jobs:
   test:
     strategy:
       matrix:
-        go-version: [ 1.18.x ]
+        go-version: [ 1.21.x ]
         os: [ ubuntu-latest ]
     runs-on: ${{ matrix.os }}
     steps: