Remove exec perms from /etc/rpm/macros.zzz-epel-override-cmake

When building, rpm warns and removes the unnecessary exec perms:

    *** WARNING: ./etc/rpm/macros.zzz-epel-override-cmake is executable
    but has empty or no shebang, removing executable bit

Update the install command to avoid the warning.

epel-rpm-macros.spec

@@ -70,7 +70,7 @@ install -Dpm 755 %{SOURCE22} \
     %{buildroot}%{_rpmconfigdir}/cmake-build
 install -Dpm 755 %{SOURCE23} \
     %{buildroot}%{_rpmconfigdir}/cmake-install
-install -Dpm 755 %{SOURCE24} \
+install -Dpm 644 %{SOURCE24} \
     %{buildroot}/etc/rpm/macros.zzz-epel-override-cmake
 
 
@@ -87,6 +87,7 @@ install -Dpm 755 %{SOURCE24} \
 %changelog
 * Sat May 01 2021 Todd Zullinger <tmz@pobox.com> - 8-20
 - Backport %%gpgverify API simplification
+- Remove exec perms from /etc/rpm/macros.zzz-epel-override-cmake
 
 * Tue Dec 22 2020 Miro Hrončok <mhroncok@redhat.com> - 8-19
 - Define %%python_disable_dependency_generator