Update dependency vue-loader to ^15.9.6

package.json

@@ -145,7 +145,7 @@
     "visibilityjs": "^1.2.4",
     "vue": "^2.6.12",
     "vue-apollo": "^3.0.3",
-    "vue-loader": "^15.9.5",
+    "vue-loader": "^15.9.6",
     "vue-router": "3.4.9",
     "vue-template-compiler": "^2.6.12",
     "vue-virtual-scroll-list": "^1.4.4",

yarn.lock

@@ -12426,10 +12426,10 @@ vue-jest@4.0.0-rc.0:
     source-map "0.5.6"
     ts-jest "26.x"
 
-vue-loader@^15.9.5:
-  version "15.9.5"
-  resolved "https://registry.yarnpkg.com/vue-loader/-/vue-loader-15.9.5.tgz#7a960dc420a3439deaacdda038fdcdbf7c432706"
-  integrity sha512-oeMOs2b5o5gRqkxfds10bCx6JeXYTwivRgbb8hzOrcThD2z1+GqEKE3EX9A2SGbsYDf4rXwRg6D5n1w0jO5SwA==
+vue-loader@^15.9.6:
+  version "15.9.6"
+  resolved "https://registry.yarnpkg.com/vue-loader/-/vue-loader-15.9.6.tgz#f4bb9ae20c3a8370af3ecf09b8126d38ffdb6b8b"
+  integrity sha512-j0cqiLzwbeImIC6nVIby2o/ABAWhlppyL/m5oJ67R5MloP0hj/DtFgb0Zmq3J9CG7AJ+AXIvHVnJAPBvrLyuDg==
   dependencies:
     "@vue/component-compiler-utils" "^3.1.0"
     hash-sum "^1.0.2"