fix: plugins/techdocs-react/package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-AJV-15274295
- https://snyk.io/vuln/SNYK-JS-QS-15268416

Author: snyk-io[bot]

plugins/techdocs-react/package.json

@@ -33,10 +33,10 @@
     "start": "backstage-cli package start"
   },
   "dependencies": {
-    "@backstage/catalog-model": "workspace:^",
+    "@backstage/catalog-model": "0.1.1",
     "@backstage/config": "workspace:^",
-    "@backstage/core-components": "workspace:^",
-    "@backstage/core-plugin-api": "workspace:^",
+    "@backstage/core-components": "0.1.0",
+    "@backstage/core-plugin-api": "0.1.0",
     "@backstage/version-bridge": "workspace:^",
     "@material-ui/core": "^4.12.2",
     "@material-ui/lab": "4.0.0-alpha.61",