Update action.yml

Author: ahmed-irfan

.github/actions/install-dependencies/action.yml

@@ -20,8 +20,8 @@ runs:
       shell: bash
       run: |
         echo "Install Mac dependencies"
-        # brew update
-        ## python3 installation fails after updating brew. It is an open issue, so until it is fixed we disable updating brew 
+        brew update
+        ## gmp and python are already installed in the latest macOS
         # brew install gmp
         # brew install python
         pip install sympy