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

brew link --overwrite tcl-tk@8 to prevent conflict with GitHub image's version
(cherry picked from commit 46dc1ba)

Co-authored-by: Victor Stinner <vstinner@python.org>
Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>

Author: 2 people

.github/workflows/reusable-macos.yml

@@ -40,7 +40,7 @@ jobs:
       run: |
         brew install pkg-config openssl@3.0 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" \