chore: Avoids XCTest issues in MacOS

Author: NeedleInAJayStack

.github/workflows/build.yml

@@ -27,10 +27,12 @@ jobs:
     name: Build and test on macos-latest
     runs-on: macos-latest
     steps:
-    - uses: swift-actions/setup-swift@v1
+    - uses: maxim-lobanov/setup-xcode@v1
+      with:
+        xcode-version: latest
     - uses: actions/checkout@v3
-    - name: Test
-      run: swift test --parallel
+    - name: Build and test
+      run: swift test --parallel --enable-test-discovery
 
   # ubuntu-latest is ubuntu-22.04 currently. Swift versions older than 5.7 don't have builds for 22.04. https://www.swift.org/download/ 
   ubuntu-old: