Update Go to 1.21.6.

Author: chrisgavin

.github/workflows/ci.yml

@@ -19,7 +19,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v4
         with:
-          go-version: 1.18.0
+          go-version: 1.21.6
       - name: Install Pkger
         run: go install --mod=readonly github.com/markbates/pkger/cmd/pkger
       - name: Build
@@ -37,7 +37,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v4
         with:
-          go-version: 1.18.0
+          go-version: 1.21.6
       - name: Test
         run: go test ./...
 
@@ -51,7 +51,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v4
         with:
-          go-version: 1.18.0
+          go-version: 1.21.6
       - name: Build
         run: go build
       - name: Test
@@ -68,7 +68,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v4
         with:
-          go-version: 1.18.0
+          go-version: 1.21.6
       - name: Check Modules
         run: |
           go mod tidy
@@ -90,7 +90,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v4
         with:
-          go-version: 1.18.0
+          go-version: 1.21.6
       - name: Setup licensedci
         uses: jonabc/setup-licensed@v1
         with:

.github/workflows/release.yml

@@ -17,7 +17,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v4
         with:
-          go-version: 1.18.0
+          go-version: 1.21.6
       - name: Install Pkger
         run: go install --mod=readonly github.com/markbates/pkger/cmd/pkger
       - name: Release