ci: merge download_sdk.sh into action.yml

Signed-off-by: Unai Martinez-Corral <[email protected]>

Author: umarcor

ci/action.yml

@@ -16,7 +16,11 @@ runs:
         export CI_SCRIPTS_PATH="$GITHUB_ACTION_PATH"
 
         source $GITHUB_ACTION_PATH/common.sh
-        bash $GITHUB_ACTION_PATH/download_sdk.sh
+        if [ $OS_NAME = 'osx' ]; then
+            if [[ ! -d $HOME/sdk/MacOSX10.9.sdk ]]; then
+                git clone https://github.com/phracker/MacOSX-SDKs $HOME/sdk
+            fi
+        fi
         bash $GITHUB_ACTION_PATH/install.sh
         set -x
         if [ $SCRIPT ]; then