set openapi generator ref to version which supports typescript generation.

Signed-off-by: Michael Valdron <[email protected]>

Author: michael-valdron

Diff for: build/typescript-model/generate.sh

@@ -29,6 +29,7 @@ export REPOSITORY=''
 EOF
     echo "[INFO] Lauching gen to generate typescript files based on swagger json"
     export OPENAPI_SKIP_FETCH_SPEC=true
+    export OPENAPI_GENERATOR_COMMIT="v6.3.0"
     $WORK_DIR/gen/openapi/typescript.sh $WORK_DIR/typescript-models $WORK_DIR/config.sh
 
     sed -i 's/\"name\": \".*\"/"name": "@devfile\/api"/g' $WORK_DIR/typescript-models/package.json