Add Disqus provider

Hello there!

Added a new Disqus provider and some internal chores.

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v2.15.0

May 3rd, 2023

What's Changed

• Use remote GitHub CI config files by @bocharsky-bw in #398
• Fix broken CS by @bocharsky-bw in #400
• Add Disqus provider by @antalaron in #404

New Contributors

• @antalaron made their first contribution in #404

Full Changelog: v2.14.0...v2.15.0