ci(macos): Align macos script with current linux

Also use venv instead of global install
brew/python doesn't like installing python packages globally:
```
error: externally-managed-environment
× This environment is externally managed
```

Author: yedayak

.github/workflows/ci.yaml

@@ -114,4 +114,4 @@ jobs:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
-      - run: env PYTESTFLAGS=--verbose test/macos-script.sh
+      - run: env PYTESTFLAGS="--verbose -p no:cacheprovider" test/macos-script.sh

test/macos-script.sh

@@ -8,6 +8,9 @@ brew install \
     automake \
     bash
 
+python3 -m venv venv
+#shellcheck disable=SC1091
+source venv/bin/activate
 python3 -m pip install -r test/requirements.txt
 
 export bashcomp_bash=bash
@@ -18,5 +21,4 @@ autoreconf -i
 make -j
 
 make distcheck \
-    PYTESTFLAGS="${PYTESTFLAGS---verbose --numprocesses=auto --dist=loadfile}"
-cp -p bash-completion-*.tar.* "$oldpwd/"
+    PYTESTFLAGS="${PYTESTFLAGS---verbose -p no:cacheprovider --numprocesses=auto --dist=loadfile}"