ruby-jwt v2.0 removed the `typ` header in
https://github.com/jwt/ruby-jwt/commit/cc41d53e00f8cbf015271b53f5ad761bd6ac2312.

To ensure tokens don't get marked invalid during an upgrade,
add it back to ensure backwards compatibility.

ruby-jwt v2.0 removed the `typ` header in
https://github.com/jwt/ruby-jwt/commit/cc41d53e00f8cbf015271b53f5ad761bd6ac2312.

To ensure tokens don't get marked invalid during an upgrade,
add it back to ensure backwards compatibility.

Enables frozen string for the following files:

* lib/generators/**/*.rb
* lib/gitaly/**/*.rb
* lib/google_api/**/*.rb
* lib/haml_lint/**/*.rb
* lib/json_web_token/**/*.rb
* lib/mattermost/**/*.rb
* lib/microsoft_teams/**/*.rb
* lib/object_storage/**/*.rb
* lib/omni_auth/**/*.rb
* lib/peek/**/*.rb
* lib/rouge/**/*.rb
* lib/rspec_flaky/**/*.rb
* lib/system_check/**/*.rb

Partially addresses #47424.