ci(workflows): minor fixes and updates

[ReenigneArcher]

Description

Various workflow updates.

• Automerge PRs into pacman-repo and flathub
• Remove archive from pacman-repo before commit
• Use org vars for discord notifier
• Fix typos

Screenshot

Issues Fixed or Closed

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)
• Dependency update (updates to dependencies)
• Documentation update (changes to documentation)
• Repository update (changes to repository files, e.g. .github/...)

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added or updated the in code docstring/documentation-blocks for new or existing methods/components

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 11.62%. Comparing base (6efc687) to head (c77667d).

Additional details and impacted files

@@            Coverage Diff            @@
##           master    #3581     +/-   ##
=========================================
  Coverage   11.62%   11.62%             
=========================================
  Files          93       93             
  Lines       17319    17319             
  Branches     8085     8085             
=========================================
  Hits         2014     2014             
- Misses      12823    14710   +1887     
+ Partials     2482      595   -1887     

Flag	Coverage Δ
Linux	11.30% <ø> (ø)
Windows	13.04% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

see 31 files with indirect coverage changes

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud