[Misc] Prevent regressions of Live Data npm build

- Remove the range for vue dependency
- Version the package-lock.json file to make the build repeatable

xwiki-platform-core/xwiki-platform-livedata/xwiki-platform-livedata-webjar/src/main/config/package.json

@@ -9,7 +9,7 @@
     "test": "vue-cli-service test:unit"
   },
   "dependencies": {
-    "vue": "^2.6.12",
+    "vue": "2.6.12",
     "vue-i18n": "8.15.5",
     "lz-string": "^1.4.4",
     "u-node": "^0.0.2",
@@ -24,7 +24,7 @@
     "eslint-plugin-vue": "^7.5.0",
     "less": "^4.1.1",
     "less-loader": "^8.0.0",
-    "vue-template-compiler": "^2.6.12",
+    "vue-template-compiler": "2.6.12",
     "@vue/cli-plugin-unit-jest": "~4.5.0",
     "@vue/test-utils": "^1.0.3",
     "jquery": "2.2.4",