Explicitly set go version instead of detecting it from go.mod file (bug in action).

Author: mneverov

.github/workflows/test.yml

@@ -36,7 +36,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@7a3fe6cf4cb3a834922a1244abfce67bcef6a0c5 # v6.2.0
         with:
-          go-version-file: go.mod
+          go-version: '1.25'
           cache: false
 
       - name: golangci-lint