Bump Go from 1.18 to 1.21

Signed-off-by: Marco Franssen <[email protected]>

.github/workflows/golang.yml

@@ -17,15 +17,15 @@ jobs:
     name: Continuous Integration
 
     steps:
+      - name: Check out code
+        uses: actions/checkout@v3
+
       - name: Set up Go
         uses: actions/[email protected]
         with:
-          go-version: 1.18
+          go-version-file: go.mod
           check-latest: true
 
-      - name: Check out code
-        uses: actions/checkout@v3
-
       - name: Cache Go modules
         uses: actions/[email protected]
         id: go-mod-cache
@@ -74,22 +74,22 @@ jobs:
       container_repos: ${{ steps.container_info.outputs.container_repos }}
 
     steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
       - name: Set up Go
         uses: actions/[email protected]
         with:
-          go-version: 1.18
+          go-version-file: go.mod
           check-latest: true
 
       - name: Install cosign
         uses: sigstore/[email protected]
         with:
           cosign-release: 'v2.2.0'
 
-      - name: Checkout
-        uses: actions/checkout@v3
-        with:
-          fetch-depth: 0
-
       - name: Login to container registries
         if: startsWith(github.ref, 'refs/tags/')
         run: |

go.mod

@@ -1,6 +1,6 @@
 module github.com/philips-labs/spiffe-vault
 
-go 1.18
+go 1.21
 
 require (
 	github.com/hashicorp/vault/api v1.9.2