fix: 修改文件预览插件版本

Signed-off-by: tangshizhe <48740614+tangshizhe@users.noreply.github.com>

jydocs-pc/package.json

@@ -9,20 +9,20 @@
     "lint": "vue-cli-service lint --fix"
   },
   "dependencies": {
-    "@js-preview/docx": "^1.6.0",
-    "@js-preview/excel": "^1.7.3",
-    "@js-preview/pdf": "^2.0.1",
-    "@vue-office/docx": "^1.6.0",
-    "@vue-office/excel": "^1.7.3",
-    "@vue-office/pdf": "^2.0.1",
-    "@vue/composition-api": "^1.7.2",
+    "@js-preview/docx": "1.6.0",
+    "@js-preview/excel": "1.7.3",
+    "@js-preview/pdf": "2.0.1",
+    "@vue-office/docx": "1.6.0",
+    "@vue-office/excel": "1.7.3",
+    "@vue-office/pdf": "2.0.1",
+    "@vue/composition-api": "1.7.2",
     "axios": "^0.21.1",
     "core-js": "^3.4.3",
     "element-ui": "^2.15.16-rc",
     "punycode": "^2.3.1",
     "single-spa-vue": "^1.5.4",
     "systemjs-webpack-interop": "^1.1.2",
-    "vue": "^2.7.16",
+    "vue": "^2.6.11",
     "vue-demi": "^0.14.6",
     "vue-router": "^3.1.3",
     "vuex": "^3.4.0"