refactor: Bump @babel/plugin-transform-flow-comments from 7.19.0 to 7.21.0 (parse-community#1786)

Author: dependabot[bot]

package-lock.json

@@ -40,7 +40,7 @@
     "@babel/core": "7.20.12",
     "@babel/eslint-parser": "7.19.1",
     "@babel/plugin-proposal-class-properties": "7.18.6",
-    "@babel/plugin-transform-flow-comments": "7.19.0",
+    "@babel/plugin-transform-flow-comments": "7.21.0",
     "@babel/plugin-transform-flow-strip-types": "7.19.0",
     "@babel/plugin-transform-runtime": "7.21.0",
     "@babel/preset-env": "7.20.2",