fix: Invalid UTF-8 commit messages in JSON API responses (#37542)

modules/repository/commits_test.go

@@ -145,7 +145,7 @@ func TestCommitToPushCommit(t *testing.T) {
 		ID:            sha1,
 		Author:        sig,
 		Committer:     sig,
-		CommitMessage: "Commit Message",
+		CommitMessage: git.CommitMessage{MessageRaw: "Commit Message"},
 	})
 	assert.Equal(t, hexString, pushCommit.Sha1)
 	assert.Equal(t, "Commit Message", pushCommit.Message)
@@ -176,13 +176,13 @@ func TestListToPushCommits(t *testing.T) {
 			ID:            hash1,
 			Author:        sig,
 			Committer:     sig,
-			CommitMessage: "Message1",
+			CommitMessage: git.CommitMessage{MessageRaw: "Message1"},
 		},
 		{
 			ID:            hash2,
 			Author:        sig,
 			Committer:     sig,
-			CommitMessage: "Message2",
+			CommitMessage: git.CommitMessage{MessageRaw: "Message2"},
 		},
 	}