Feature/build target 10.15 (#3252)

* Set target to 10.15, make porter templates explicit

* CMAKE_OSX_DEPLOYMENT_TARGET refactor

* Update build_release_macos.sh

fix typo

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Co-authored-by: SoftFever <softfeverever@gmail.com>

.github/workflows/build_orca.yml

@@ -86,7 +86,7 @@ jobs:
         if: inputs.os == 'macos-12'
         working-directory: ${{ github.workspace }}
         run: |
-          ./build_release_macos.sh -s -n -a ${{inputs.arch}}
+          ./build_release_macos.sh -s -n -a ${{inputs.arch}} -t 10.15
 
  # Thanks to RaySajuuk, it's working now
       - name: Sign app and notary