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.

addOns/externals/devDependencies/package.json

@@ -60,7 +60,7 @@
     "jest-canvas-mock": "2.5.2",
     "jest-environment-jsdom": "29.7.0",
     "jest-junit": "6.4.0",
-    "lerna": "7.4.2",
+    "lerna": "9.0.4",
     "lint-staged": "9.5.0",
     "mini-css-extract-plugin": "2.9.2",
     "optimize-css-assets-webpack-plugin": "6.0.1",