Update swift.yml

Author: SomeRandomiOSDev

.github/workflows/swift.yml

@@ -17,7 +17,8 @@ jobs:
     - name: Install Swift
       run: |
         git clone https://github.com/kylef/swiftenv.git ~/.swiftenv
-        ~/.swiftenv/bin/swiftenv install $SWIFT_VERSION || true
+        ~/.swiftenv/bin/swiftenv install $SWIFT_VERSION --skip-existing
+        ~/.swiftenv/bin/swiftenv rehash
     - name: Build
       run: |
         ~/$SWIFT_EXEC --version