[CI] Perform Git checkout as late as possible (#361)

Also, update teaxyz/setup action to v1.

Author: davdroman

.github/workflows/ci.yml

@@ -101,14 +101,13 @@ jobs:
           #   xcode: 15.0
           #   install: true
     steps:
-      - name: Git Checkout
-        uses: actions/checkout@v3
-
-      - name: Setup tea environment
-        uses: teaxyz/setup@v0
+      - name: Set up tea environment
+        uses: teaxyz/setup@v1
         with:
-          +: |
-            github.com/XcodesOrg/xcodes
+          +: xcodes
+
+      - name: Set environment variables
+        run: echo "SKIP_SLOW_FASTLANE_WARNING=1" >> $GITHUB_ENV
 
       - name: Select Xcode version
         run: sudo xcodes select ${{ matrix.xcode }}
@@ -127,6 +126,9 @@ 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