chore: upgrade to go 1.21

Signed-off-by: Michal Wasilewski <[email protected]>

.github/workflows/lint.yml

@@ -8,7 +8,7 @@ jobs:
   lint:
     name: Lint the code
     runs-on: ubuntu-latest
-    container: golang:1.19
+    container: golang:1.21
 
     steps:
       - name: Check out repository code

.github/workflows/release.yml

@@ -25,7 +25,7 @@ jobs:
 
       - name: Set up Go
         uses: actions/setup-go@v4
-        with: { go-version: 1.19 }
+        with: { go-version: 1.21 }
 
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v2

.github/workflows/unit-testing.yml

@@ -14,11 +14,11 @@ jobs:
     steps:
       - name: Check out repository code
         uses: actions/checkout@v3
-            
+
       - name: Install go
         uses: actions/setup-go@v4
         with:
-          go-version: '1.19'
+          go-version: '1.21'
 
       - name: Install dependencies
         run: go mod download

go.mod

@@ -1,6 +1,6 @@
 module github.com/spacelift-io/spacectl
 
-go 1.19
+go 1.21
 
 require (
 	github.com/ProtonMail/gopenpgp/v2 v2.6.1