feat: stop cross compiling miniooni (#908)

See https://github.com/ooni/probe/issues/2119

While there, shrink the Makefile to only export the minimum
set of rules to comfortable build using GHA.

.github/workflows/macos.yml

@@ -34,7 +34,7 @@ jobs:
           PSIPHON_CONFIG_KEY: ${{ secrets.PSIPHON_CONFIG_KEY }}
           PSIPHON_CONFIG_JSON_AGE_BASE64: ${{ secrets.PSIPHON_CONFIG_JSON_AGE_BASE64 }}
 
-      - run: make ./CLI/ooniprobe-darwin
+      - run: make CLI/darwin
 
       - run: ./E2E/ooniprobe.sh ./CLI/ooniprobe-darwin-amd64
 
@@ -42,7 +42,9 @@ jobs:
           tag=$(echo $GITHUB_REF | sed 's|refs/tags/||g')
           gh release create -p $tag --target $GITHUB_SHA || true
           gh release upload $tag --clobber ./CLI/ooniprobe-darwin-amd64 \
-                                           ./CLI/ooniprobe-darwin-arm64
+                                           ./CLI/ooniprobe-darwin-arm64 \
+                                           ./CLI/miniooni-darwin-amd64 \
+                                           ./CLI/miniooni-darwin-arm64
         if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/v')
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}