feat: use go mod version for tests

Author: demeyerthom

.changes/unreleased/Fixed-20241022-104659.yaml

@@ -0,0 +1,3 @@
+kind: Fixed
+body: Use go version from go mod for tests
+time: 2024-10-22T10:46:59.499310463+02:00

.github/workflows/tests.yml

@@ -9,10 +9,10 @@ jobs:
     steps:
     - uses: actions/checkout@v4
 
-    - name: Set up Go 1.20
+    - name: Set up Go
       uses: actions/setup-go@v5
       with:
-        go-version: "1.20"
+        go-version-file: go.mod
 
     - name: golangci-lint
       continue-on-error: true