- Replace hardcoded python3.8 path in the spec file
- Add Conflicts with Boost 1.66 version in SLE15 since that version
uses different Provides.

- update to 1.75.0:
* new library:
+ Boost.JSON - JSON parsing library
+ Boost.LEAF - error handling library
+ Boost.PFR - basic reflection without macros or boilderplate code
* for details on all changes see,
https://www.boost.org/users/history/version_1_75_0.html
- package boost's jam files so the Boost.Build is more usable
- python_library_name.patch: update it to remove python version
suffix and keep old sonames. We only support one python3 version
at a time.
- refreshed patches: boost-no_type_punning.patch
boost-strict_aliasing.patch python_library_name.patch
- serialization_missing_includes.patch: upstreamed
- baselibs.conf: updated to new version