[3.9] pythongh-89452: GHA: Set --with-dbmliborder to avoid issues with homebrew's gdbm 1.24 (pythonGH-125112)

Per https://github.com/python/cpython/issues/89452GH-issuecomment-1116329316,
the issue is fixed in configure for 3.11+, and

> For older Python versions, the workaround is to build with:
>
>     ./configure --with-dbmliborder=gdbm:ndbm

We need this workaround in GitHub Actions, otherwise the tests fail.
(cherry picked from commit 850189a)

Author: encukou

.github/workflows/build.yml

@@ -168,7 +168,9 @@ jobs:
             --with-pydebug \
             --with-openssl="$(brew --prefix [email protected])" \
             --with-tcltk-libs="$(pkg-config --libs tk)" \
-            --with-tcltk-includes="$(pkg-config --cflags tk)"
+            --with-tcltk-includes="$(pkg-config --cflags tk)" \
+            --with-dbmliborder=gdbm:ndbm
+        # (--with-dbmliborder needed for homebrew's gdbm 1.24: see gh-89452)
     - name: Build CPython
       run: make -j4
     - name: Display build info