Enable manylinux tests for Python 3.12 and x64

Author: molinav

.github/workflows/basemap-for-manylinux.yml

@@ -260,9 +260,6 @@ jobs:
         python-version:
           ["2.7", "3.5", "3.6", "3.7", "3.8", "3.9", "3.10", "3.11", "3.12"]
         exclude:
-          # Missing precompiled binaries for `lxml`.
-          - arch: "x64"
-            python-version: "3.12"
           # Missing precompiled binaries for `numpy`, `matplotlib`,
           # `pyproj`, `pillow` and `lxml`.
           - arch: "x86"