WIP: lowdown

Is available on both Homebrew and Alpine Linux v3.15+
https://formulae.brew.sh/formula/lowdown
https://repology.org/project/lowdown/versions

Unfortunately the muslcc containers have not updated in 2 years
(https://musl.cc/) and thus still run Alpine Linux 3.14.

.github/workflows/continuous-build-macos.yml

@@ -35,6 +35,12 @@ jobs:
         with:
           submodules: recursive
 
+      - name: Install extra build tools
+        run: |
+          export HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK=1
+          brew update --quiet
+          brew install --force --overwrite lowdown
+
       - name: Compile
         run: |
           make CXX=g++-11 ARCH=x86_64 STATIC=true STRIP=true
@@ -58,6 +64,12 @@ jobs:
         with:
           submodules: recursive
 
+      - name: Install extra build tools
+        run: |
+          export HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK=1
+          brew update --quiet
+          brew install --force --overwrite lowdown
+
       - name: Compile
         run: |
           make CXX=g++-12 ARCH=x86_64 STATIC=true STRIP=true