Disable groups by default and Some optimizations

- Put groups support behind a feature flag, and disabled by default.
  The reason is that it has some known issues, but we want to keep
  optimizing this feature. Putting it behind a feature flag could help
  some users, and the developers into optimizing this feature without to
  much trouble.

Further:

- Updates Rust to v1.66.0
- Updated GHA workflows
- Updated Alpine to 3.17
- Updated jquery to v3.6.2
- Moved jdenticon.js to load at the bottom, fixes an issue on chromium
- Added autocomplete attribute to admin login password field
- Added some extra CSP options (Tested this on Safari, Firefox, Chrome, Bitwarden Desktop)
- Moved uppercase convertion from runtime to compile-time using `paste`
  for building the environment variables, lowers heap allocations.

.env.template

@@ -90,6 +90,13 @@
 ## If unset (the default), events are kept indefinitely and the scheduled job is disabled!
 # EVENTS_DAYS_RETAIN=
 
+## BETA FEATURE: Groups
+## Controls whether group support is enabled for organizations
+## This setting applies to organizations.
+## Disabled by default because this is a beta feature, it contains known issues!
+## KNOW WHAT YOU ARE DOING!
+# ORG_GROUPS_ENABLED=false
+
 ## Job scheduler settings
 ##
 ## Job schedules use a cron-like syntax (as parsed by https://crates.io/crates/cron),