fix: switch to new mas-sso url

[pmuir]

BREAKING CHANGE: This change will mean that old Kafka instances are inaccessible without overriding the MAS-SSO URL

Description

Migrates to new Single Sign-on URL.

Hold merging until we get the all clear from @akoserwal

Verification Steps

1. Run rhoas login
2. Validate that it visits the new URL
3. Use the Command Line Interface to list the topics on a NEW Kafka instance

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist

• Documentation added for the feature
• CI and all relevant tests are passing
• Code Review completed
• Verified independently by reviewer

[craicoverflow]

The changelog generator will only pick up a feat, fix and perf type, chores are ignored because a chore usually means a non-code change. Would fix or feat be more suitable?

Also, one of the following is necessary to highlight that this is breaking change:

• A BREAKING CHANGE: <reason> commit footer
• Prefix the type with !: fix!: <reason>

https://www.conventionalcommits.org/en/v1.0.0/#specification

[pmuir]

The commit is fixed, but I guess as this repo is using squash and merge we need to update the PR too?

[pmuir]

I've validated the changes locally now