Revert "Update pyproject.toml - do not build a universal wheel"

This reverts commit 5fc755f.

Author: Spitfire1900

pyproject.toml

@@ -20,7 +20,7 @@ select = "*-musllinux*"
 repair-wheel-command = "LD_LIBRARY_PATH=/project/ci/lib auditwheel repair -w {dest_dir} {wheel}"
 
 [tool.cibuildwheel.macos]
-archs = ["x86_64", "arm64"]
+archs = ["universal2"]
 environment = {LIBGIT2_VERSION="1.9.0", LIBSSH2_VERSION="1.11.1", OPENSSL_VERSION="3.2.3", LIBGIT2="/Users/runner/work/pygit2/pygit2/ci"}
 repair-wheel-command = "DYLD_LIBRARY_PATH=/Users/runner/work/pygit2/pygit2/ci/lib delocate-wheel --require-archs {delocate_archs} -w {dest_dir} {wheel}"