fix: observer command (#123)

* fix(observer): resolve -c flag conflict and crash

- Remove -c short flag from --cookie option on ps:observer
  to fix conflict with -c for --ssh_cmd (Click silently
  took the last -c definition, making --cookie unreachable)
- Add missing `auth` import in observer.py that caused a
  NameError crash on 401 responses
- Fix sanitize_respone to handle multi-line Erlang/OTP
  warnings by extracting only the last non-empty line
  before stripping quotes

* chore: bump version

Merge branch 'main' of giggh:gigalixir/gigalixir-cli

Merge pull request #120 from gigalixir/feat-update-signup-flow

feat: update signup flow

Merge pull request #119 from gigalixir/feat-signup-2.0

feat: new signup support

Merge pull request #116 from gigalixir/fix-dependency-and-observer

fix: pkg_resource dep and observer command

Merge pull request #115 from gigalixir/feat-new-database-supports

feat: new database support

Merge pull request #113 from gigalixir/fix-google-oauth

fix: google oauth

Merge pull request #112 from gigalixir/feat-update-detection

feat: update detection

Merge pull request #111 from gigalixir/fix-rollbar-cert-issue

fix: urllib3 certificate issues with rollbar

chore: remove debug print out