Bump to go 1.23 and bring the kairos linter workflow (#379)

.github/workflows/unit-tests.yaml

@@ -10,35 +10,19 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
-  lint:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v4
-        with:
-          fetch-depth: 0
-      - uses: earthly/actions-setup@v1
-        with:
-          version: 0.8.12
-      - name: Run Lint checks
-        run: earthly +golint
   unit-tests:
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        go-version: [ "1.22-bookworm" ]
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
         with:
           fetch-depth: 0
-      - uses: earthly/actions-setup@v1
+      - name: Setup Go environment
+        uses: actions/setup-go@v5.0.2
         with:
-          version: 0.8.12
-      - name: Build
-        run: earthly +build --GO_VERSION=${{ matrix.go-version }}
+          go-version-file: go.mod
       - name: Run tests
-        run: earthly +test --GO_VERSION=${{ matrix.go-version }}
+        run: go run github.com/onsi/ginkgo/v2/ginkgo --race --covermode=atomic --coverprofile=coverage.out -p -r ./...
       - name: Codecov
         uses: codecov/codecov-action@v4
         with: