fix: plugins/search-backend-module-elasticsearch/package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-WEBPACK-15235959
- https://snyk.io/vuln/SNYK-JS-WEBPACK-15235969

Author: snyk-bot

plugins/search-backend-module-elasticsearch/package.json

@@ -37,11 +37,11 @@
   },
   "dependencies": {
     "@backstage/backend-common": "workspace:^",
-    "@backstage/backend-plugin-api": "workspace:^",
+    "@backstage/backend-plugin-api": "0.6.19",
     "@backstage/config": "workspace:^",
     "@backstage/integration-aws-node": "workspace:^",
     "@backstage/plugin-search-backend-node": "workspace:^",
-    "@backstage/plugin-search-common": "workspace:^",
+    "@backstage/plugin-search-common": "0.3.1",
     "@elastic/elasticsearch": "^7.13.0",
     "@opensearch-project/opensearch": "^2.2.1",
     "aws4": "^1.12.0",