* Use latest 2.x version of `@supabase/supabase-js` in all examples
* Use `latest` version of `@supabase/ssr` in all examples
* Remove lock files from examples
* Add examples lock files in .gitignore
The rationale is:
- Lock files are not actively maintained/updated (or the versions in the
package.json files for that matter)
- They pin an arbitrary version (from the end-user perspective)
- Removes the need to manually update the versions and reinstall
- Consistency
<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit
## Release Notes
* **Chores**
* Broadened Supabase SDK dependency version constraints across example
projects for greater flexibility with compatible updates
* Updated some SSR package dependencies to track latest releases
* Added gitignore rules for dependency lock files in example directories
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
