Doc: Update Alpha changelog
Context
Updating Alpha changelog to reflect protocol and enviroment change merged into master before 22nd of August.
The following MRs have touched src/proto_alpha/lib_protocol or src/lib_protocol_environment/sigs/v{6,7}/ since the last update of Alpha changelog (!6072 (merged)).
- 5891
- 6071
- 5828 - already included
- 6077
- 5926
- 6080 - tests only
- 6104
The list was generated using the following command:
$ git log --reverse --merges --full-history db1899..832da3 -- src/proto_alpha/lib_protocol/ src/lib_protocol_environment/sigs/v{6,7}/ | grep 'See merge request'
Manually testing the MR
Please read the description of changes.