Excercise the detect logic for INDI on the macOS CI

libnova is available in brew, but libindi isn't available;
./configure will detect that and not build the INDI driver.

.github/workflows/c-cpp.yml

@@ -68,6 +68,7 @@ jobs:
       run: |
         brew install autoconf
         brew install automake
+        brew install libnova
         brew install libtool
         brew install grep
         brew install swig
@@ -86,7 +87,7 @@ jobs:
       run: ./configure ${{ matrix.configure_args }}
     - name: configure on macOS
       if: runner.os == 'macOS'
-      run: ./configure ${{ matrix.configure_args }} --without-lua-binding PYTHON=/opt/homebrew/bin/python3
+      run: ./configure ${{ matrix.configure_args }} --with-indi=detect --without-lua-binding PYTHON=/opt/homebrew/bin/python3
     - name: make
       run: make -j 4 V=0 --no-print-directory
     - name: make distcheck
@@ -94,4 +95,4 @@ jobs:
       run: make distcheck V=0 --no-print-directory AM_DISTCHECK_CONFIGURE_FLAGS="${{ matrix.configure_args }} --without-perl-binding"
     - name: make distcheck on macOS
       if: runner.os == 'macOS'
-      run: make distcheck V=0 --no-print-directory AM_DISTCHECK_CONFIGURE_FLAGS="${{ matrix.configure_args }} --without-perl-binding --without-lua-binding --without-tcl-binding PYTHON=/opt/homebrew/bin/python3"
+      run: make distcheck V=0 --no-print-directory AM_DISTCHECK_CONFIGURE_FLAGS="${{ matrix.configure_args }} --with-indi=detect --without-perl-binding --without-lua-binding --without-tcl-binding PYTHON=/opt/homebrew/bin/python3"