v2.28.8: tighten core deps for the 7 collapsed packages

Summary

After v2.28.7 collapsed 7 re-export shim dirs into eager sys.modules pointers, the umbrella now imports the corresponding external scitex_<short> packages at load time. Tightening the core dependency pins so users can't end up with an old leaf that's missing API the umbrella expects.

Pkg	Was (core)	Now (core)
scitex-app	>=0.1.0	>=0.2.5
scitex-scholar	>=1.0.0	>=1.2.3
scitex-repro	>=0.1.0	>=0.1.3
scitex-compat	>=0.1.0	>=0.1.4
scitex-etc	>=0.1.0	>=0.1.4
scitex-gists	>=0.1.0	>=0.1.3
scitex-audit	>=0.1.0	>=0.1.3

Extras blocks aligned to the same floor — no longer one minor version behind core.