fix npm install broken: update karma-xml2js-preprocessor to ^0.1.0

see https://github.com/opensheetmusicdisplay/opensheetmusicdisplay/issues/1057

package.json

@@ -106,7 +106,7 @@
     "karma-mocha": "^2.0.1",
     "karma-mocha-reporter": "^2.0.4",
     "karma-webpack": "^4.0.2",
-    "karma-xml2js-preprocessor": "^0.0.3",
+    "karma-xml2js-preprocessor": "^0.1.0",
     "mocha": "^7.0.1",
     "ncp": "^2.0.0",
     "npm-run-all": "^4.1.2",