Bump @vue/composition-api in /webui/frontend

Bumps [@vue/composition-api](https://github.com/vuejs/composition-api) from 1.0.0-rc.7 to 1.0.0-rc.8.
- [Release notes](https://github.com/vuejs/composition-api/releases)
- [Changelog](https://github.com/vuejs/composition-api/blob/master/CHANGELOG.md)
- [Commits](vuejs/composition-api@v1.0.0-rc.7...v1.0.0-rc.8)

Signed-off-by: dependabot[bot] <support@github.com>

webui/frontend/package.json

@@ -9,7 +9,7 @@
   },
   "dependencies": {
     "@braid/vue-formulate": "^2.5.2",
-    "@vue/composition-api": "^1.0.0-rc.7",
+    "@vue/composition-api": "^1.0.0-rc.8",
     "axios": "^0.21.1",
     "bootstrap-vue": "^2.21.2",
     "core-js": "^3.11.0",

webui/frontend/yarn.lock

@@ -1520,10 +1520,10 @@
   optionalDependencies:
     prettier "^1.18.2"
 
-"@vue/composition-api@^1.0.0-rc.7":
-  version "1.0.0-rc.7"
-  resolved "https://registry.yarnpkg.com/@vue/composition-api/-/composition-api-1.0.0-rc.7.tgz#05a9e81ad91d85d3390b1386c0079666d2e1b3bb"
-  integrity sha512-aj/lWD+9dmJ+r9qkbASByqlphkbwvZ8q1T7yC5H1leWSdtxfWg7tDR98vZEKzjikRSztwC7xrtrLwOnt8glQDA==
+"@vue/composition-api@^1.0.0-rc.8":
+  version "1.0.0-rc.8"
+  resolved "https://registry.yarnpkg.com/@vue/composition-api/-/composition-api-1.0.0-rc.8.tgz#ace0f1c8cc7d5b193825fabdc7c4b919bb182a9e"
+  integrity sha512-9ZW2+2WW7iNywVFeaz9K18DW/aA4MLncz+FiUpjtMUKzHpiN1GtYQ8rRYOhHfGXD2Hmp4tTFjqaTM4WeAbB1ig==
   dependencies:
     tslib "^2.2.0"