Fix brew on macos (#1)

Author: nyurik

action.yml

@@ -60,7 +60,13 @@ runs:
 
     - name: Install PostGIS (Mac)
       if: runner.os == 'macOS'
-      run: brew install postgis
+      run: brew install postgis || true
+      shell: bash
+
+      # A workaround for postgis installation bug on macOS. Might not be needed in the future
+    - name: Brew workaround 2 (Mac)
+      if: runner.os == 'macOS'
+      run: brew link --overwrite python@3.11
       shell: bash
 
     - name: Decide Postgis version (Windows)