ci: set minimum deployment versions correctly [skip ci]

Shouldn't really be an issue since 10.13 is already lower than 11.0, but this is more "correct"

.github/workflows/ci.yml

@@ -285,12 +285,14 @@ jobs:
             os-arch: x86_64
             os: macos-10.15
             cmake-gen: Ninja
+            min-deploy: 10.13
           - build-type: RelWithDebInfo
             compiler-name: Clang LLVM
             os-name: macOS
             os-arch: arm64
             os: macos-11.0
             cmake-gen: Ninja
+            min-deploy: 11.0
     env:
       DEP_LOCATION: /opt/olive-editor
     name: |
@@ -349,7 +351,7 @@ jobs:
           brew install ninja
           PATH=$DEP_LOCATION:$DEP_LOCATION/bin:$DEP_LOCATION/include:$DEP_LOCATION/lib:$DEP_LOCATION/crashpad:$PATH \
             cmake $GITHUB_WORKSPACE -DCMAKE_BUILD_TYPE=${{ matrix.build-type }} \
-              -DCMAKE_OSX_DEPLOYMENT_TARGET=10.13 -G "${{ matrix.cmake-gen }}" \
+              -DCMAKE_OSX_DEPLOYMENT_TARGET=${{ matrix.min-deploy }} -G "${{ matrix.cmake-gen }}" \
               -DCMAKE_OSX_ARCHITECTURES="${{ matrix.os-arch }}"
 
       - name: Build