Fix publication of x86_64 wheels

This was broken when we added support for building manylinux2010 wheels
for modern Python interpreters due to a misuse of the `include`
configuration of the GitHub Actions matrix job.

Signed-off-by: Matt Wozniski <mwozniski@bloomberg.net>

Author: godlygeek

.github/workflows/build_wheels.yml

@@ -58,6 +58,7 @@ jobs:
       fail-fast: false
       matrix:
         wheel_type: ${{ fromJSON(needs.choose_linux_wheel_types.outputs.wheel_types) }}
+        manylinux2010_hack: ""
         include:
           - wheel_type: manylinux_x86_64
             manylinux2010_hack: "_manylinux2010_hack"