Update Go version in CI workflows to 1.23

Signed-off-by: HAHWUL <[email protected]>

Author: hahwul

.github/workflows/codecov.yml

@@ -29,7 +29,7 @@ jobs:
           fetch-depth: 2
       - uses: actions/setup-go@v2
         with:
-          go-version: '1.21'
+          go-version: '1.23'
       - name: Run coverage
         run: go test -coverprofile=coverage.out -covermode=atomic ./...
       - name: Upload coverage to Codecov

.github/workflows/go.yml

@@ -24,7 +24,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        go: ["1.21", "1.22", "1.23"]
+        go: ["1.23"]
     steps:
       - name: Set up Go ${{ matrix.go }}
         uses: actions/setup-go@v4