[3.11] gh-128069: brew link --overwrite tcl-tk@8 to prevent conflict with GitHub image's version (GH-128090) (#129172)

Author: miss-islington

.github/workflows/reusable-macos.yml

@@ -40,7 +40,7 @@ jobs:
       run: |
         brew install pkg-config [email protected] xz gdbm tcl-tk@8
         # Because alternate versions are not symlinked into place by default:
-        brew link tcl-tk@8
+        brew link --overwrite tcl-tk@8
     - name: Configure CPython
       run: |
         GDBM_CFLAGS="-I$(brew --prefix gdbm)/include" \