macOS notarization: add automatic retry

Backport of musescore#25996

build/ci/macos/notarize.sh

@@ -30,7 +30,22 @@ echo "ARTIFACT_NAME: $ARTIFACT_NAME"
 
 echo "Uploading to apple to notarize..."
 
-xcrun notarytool submit --apple-id $APPLE_USERNAME --team-id $APPLE_TEAM_ID --password $APPLE_PASSWORD --wait $ARTIFACTS_DIR/$ARTIFACT_NAME
+for i in 1 2 3; do
+    c=0
+    xcrun notarytool submit \
+        --apple-id $APPLE_USERNAME \
+        --team-id $APPLE_TEAM_ID \
+        --password $APPLE_PASSWORD \
+        --wait $ARTIFACTS_DIR/$ARTIFACT_NAME \
+        || c=$?
+    if [ $c -eq 0 ]; then break; fi
+    if [ $i -eq 3 ]; then
+        echo "notarytool failed; exiting after 3 retries."
+        exit 1
+    fi
+    echo "notarytool failed; retrying in 30s"
+    sleep 30
+done
 
 echo "Stapling and running packaging up"
 xcrun stapler staple $ARTIFACTS_DIR/$ARTIFACT_NAME