github actions: Disable macOS for now

This just fails left and right. Once we've merged the pexpect stuff
and remove the too-tight tests we can try enabling it again.

.github/workflows/main.yml

@@ -27,22 +27,22 @@ jobs:
       run: |
         make test
 
-  macos:
+  # macos:
 
-    runs-on: macos-latest
+  #   runs-on: macos-latest
 
-    steps:
-    - uses: actions/checkout@v2
-    - name: Install deps
-      run: |
-        brew install pcre2
-    - name: cmake
-      run: |
-        mkdir build && cd build
-        cmake .. 
-    - name: make
-      run: |
-        make
-    - name: make test
-      run: |
-        make test
+  #   steps:
+  #   - uses: actions/checkout@v2
+  #   - name: Install deps
+  #     run: |
+  #       brew install pcre2
+  #   - name: cmake
+  #     run: |
+  #       mkdir build && cd build
+  #       cmake .. 
+  #   - name: make
+  #     run: |
+  #       make
+  #   - name: make test
+  #     run: |
+  #       make test