fix: plugins/graphql-voyager/package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-LINKIFYREACT-11502190
- https://snyk.io/vuln/SNYK-JS-CROSSSPAWN-8303230
- https://snyk.io/vuln/SNYK-JS-HTTPPROXYMIDDLEWARE-8229906
- https://snyk.io/vuln/SNYK-JS-NODEFORGE-14114940
- https://snyk.io/vuln/SNYK-JS-ANSIREGEX-1583908
- https://snyk.io/vuln/SNYK-JS-SEMVER-3247795
- https://snyk.io/vuln/SNYK-JS-ZOD-5925617
- https://snyk.io/vuln/SNYK-JS-BACKSTAGEBACKENDAPPAPI-6229731
- https://snyk.io/vuln/SNYK-JS-NODEFORGE-14125745
- https://snyk.io/vuln/SNYK-JS-WEBPACKDEVSERVER-10300775
- https://snyk.io/vuln/SNYK-JS-OCTOKITREQUEST-8730853
- https://snyk.io/vuln/SNYK-JS-MYSQL2-6591085
- https://snyk.io/vuln/SNYK-JS-MYSQL2-6670046
- https://snyk.io/vuln/SNYK-JS-BODYPARSER-7926860
- https://snyk.io/vuln/SNYK-JS-BACKSTAGEBACKENDCOMMON-6274391
- https://snyk.io/vuln/SNYK-JS-TARFS-9535930

Author: snyk-io[bot]

plugins/graphql-voyager/package.json

@@ -23,9 +23,9 @@
     "postpack": "backstage-cli package postpack"
   },
   "dependencies": {
-    "@backstage/core-components": "workspace:^",
-    "@backstage/core-plugin-api": "workspace:^",
-    "@backstage/theme": "workspace:^",
+    "@backstage/core-components": "0.1.0",
+    "@backstage/core-plugin-api": "0.1.0",
+    "@backstage/theme": "0.1.1",
     "@material-ui/core": "^4.12.2",
     "@material-ui/icons": "^4.9.1",
     "@material-ui/lab": "4.0.0-alpha.61",