Fix test when git is not set up

Author: BartSchuurmans

internal/gps/vcs_source_test.go

@@ -538,7 +538,9 @@ func TestGitSourceListVersionsNoHEAD(t *testing.T) {
 
 	// Create test repo with a single commit on the master branch
 	h.RunGit(repoPath, "init")
-	h.RunGit(repoPath, "commit", "--allow-empty", `--message="Initial commit"`, `--author="Test author <[email protected]>"`)
+	h.RunGit(repoPath, "config", "--local", "user.email", "[email protected]")
+	h.RunGit(repoPath, "config", "--local", "user.name", "Test author")
+	h.RunGit(repoPath, "commit", "--allow-empty", `--message="Initial commit"`)
 
 	// Make HEAD point at a nonexistent branch (deleting it is not allowed)
 	// The `git ls-remote` that listVersions() calls will not return a HEAD ref