[CI] Perform Git checkout as early as possible (#362)

Otherwise tea doesn't see tea.yml. I don't know what I was thinking in
#361 🤦‍♂️

Author: davdroman

.github/workflows/ci.yml

@@ -101,6 +101,9 @@ jobs:
           #   xcode: 15.0
           #   install: true
     steps:
+      - name: Git Checkout
+        uses: actions/checkout@v3
+
       - name: Set up tea environment
         uses: teaxyz/setup@v1
         with:
@@ -126,9 +129,6 @@ jobs:
           xcrun simctl list
           xcodebuild -scheme "Showcase" -showdestinations
 
-      - name: Git Checkout
-        uses: actions/checkout@v3
-
       - name: Build Showcase
         run: fastlane build platform:${{ matrix.platform[0] }} version:${{ matrix.platform[1] }} scheme:Showcase