chore: Install correct mint binary (#415)

This repository makes use of [mint][1] to run swift-based binaries.
Unfortunately, we were erroneously installing [mint-lang][2].

This means our CI has been failing to run our swift lint checker. As a
result, I have fixed the critical issues in this commit as well.

[1]: https://github.com/yonaskolb/Mint
[2]: https://mint-lang.com/

Author: keelerm84

.github/actions/ci/action.yml

@@ -27,8 +27,7 @@ runs:
     - name: Install mint
       shell: bash
       run: |
-        brew tap mint-lang/mint-lang
-        brew install mint-lang libressl
+        brew install mint
 
     - name: Install cocoapods
       shell: bash