update docs release process

[l2ysho]

1. add docs build to release process
2. generate changelog (not by hand :] )
3. yet another discussion about docs version for CLI, more context in -> docs: Add changelog from root in Docusaurus config (similar to apify sdks) #1059 , aligning with JS client make sense

[l2ysho]

@patrikbraborec we discussed docs versions this week, but maybe it is better to allign with JS client (and make this general approach for all later) as it is mentioned in this