fix(security): Bump tar to 7.5.9 and lerna to 9.0.4 to fix CVE-2026-26960. (#5824)

* fix(security): Bump tar to 7.5.9 and lerna to 9.0.4 to fix CVE-2026-26960.
Bump sharp to 0.34.5 to fix tar-fs vulnerabilities.

* Update node version to 20.19.0 in circleci config. Needed for lerna and cypress tests.

* Now installing bun for cypress tests in circleci config.

* Use node version 20.19.0 in netlify config.

platform/app/netlify.toml

@@ -19,7 +19,7 @@
 [build.environment]
   # If 'production', `yarn install` does not install devDependencies
   NODE_ENV = "development"
-  NODE_VERSION = "20.18.1"
+  NODE_VERSION = "20.19.0"
   YARN_VERSION = "1.22.5"
   RUBY_VERSION = "2.6.2"
   YARN_FLAGS = "--no-ignore-optional --pure-lockfile"