fix: upgrade js-base64 from 3.7.5 to 3.7.8

Snyk has created this PR to upgrade js-base64 from 3.7.5 to 3.7.8.

See this package in npm:
js-base64

See this project in Snyk:
https://app.snyk.io/org/patternfly-bD6TiY6PxAoojbR6oZkeJN/project/4fa216dc-11ca-42e5-9ca8-0fb156a8d62d?utm_source=github&utm_medium=referral&page=upgrade-pr

Author: snyk-bot

packages/vscode/package.json

@@ -63,7 +63,7 @@
     "@cloudmosaic/quickstarts": "^0.0.15",
     "@patternfly/patternfly": "^6.0.0",
     "i18next-parser": "^9.3.0",
-    "js-base64": "^3.6.0",
+    "js-base64": "^3.7.8",
     "js-yaml": "^4.0.0",
     "react": "^18.2.0",
     "react-dom": "^18.2.0"