[ci] Enable soversion option for all builds

Fixes #18861

Author: dpiparo

.github/workflows/root-ci-config/buildconfig/global.txt

@@ -79,7 +79,7 @@ rpath=ON
 runtime_cxxmodules=ON
 shadowpw=OFF
 shared=ON
-soversion=OFF
+soversion=ON
 spectrum=ON
 sqlite=ON
 ssl=ON