Update max parrallel (#473)

Author: jamesnrokt

.github/workflows/native-tests.yml

@@ -14,6 +14,7 @@ env:
 jobs:
   native-unit-tests:
     strategy:
+      max-parallel: 4
       matrix:
         platform: [iOS, tvOS]
         scheme: [mParticle-Apple-SDK, mParticle-Apple-SDK-NoLocation]
@@ -30,5 +31,5 @@ jobs:
       - name: Select Xcode
         run: sudo xcode-select -s /Applications/Xcode_${{ env.XCODE_VERSION }}.app
 
-      - name: Run iOS unit tests
+      - name: Run unit tests
         run: xcodebuild -project mParticle-Apple-SDK.xcodeproj -scheme ${{ matrix.scheme }} -destination 'platform=${{ matrix.platform }} Simulator,name=${{ matrix.device }},OS=latest' test