chore(deps): bump minimum Go version to 1.21

.github/workflows/go.yml

@@ -19,7 +19,7 @@ jobs:
     - name: Set up Go 1.x
       uses: actions/setup-go@v5
       with:
-        go-version: ^1.19
+        go-version: ^1.21
       id: go
 
     - name: Check out code into the Go module directory

.github/workflows/lint.yml

@@ -5,7 +5,7 @@ jobs:
   lint:
     strategy:
       matrix:
-        go: [1.18, 1.19]
+        go: [1.21, 1.22]
     name: lint
     runs-on: ubuntu-latest
     steps:
@@ -16,4 +16,4 @@ jobs:
         with:
           go-version: ${{ matrix.go }}
       - name: "Run go vet"
-        run: "go vet ./pkg/..."
+        run: "go vet ./pkg/..."

.github/workflows/test.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        go: [1.18, 1.19]
+        go: [1.21, 1.22]
         cross_compile: [true, false]
     steps:
       - uses: actions/checkout@v4
@@ -35,7 +35,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-go@v5
         with:
-          go-version: 1.19
+          go-version: ^1.21
       - name: Install dyff
         run: go install github.com/homeport/dyff/cmd/dyff@v1.5.8
       - name: Create .coverprofile for each targeted directory by re:running tests