build: v1.1.2

[tombh]

This release will include the following PRs:

• chore: split protocol.py into own folder/files by @tombh in https://github.com/openlawlibrary/pygls/pull/398
• docs: correct doc comment for PositionCodec.client_num_units by @RossBencina in https://github.com/openlawlibrary/pygls/pull/399
• build(deps-dev): bump urllib3 from 2.0.6 to 2.0.7 by @dependabot in https://github.com/openlawlibrary/pygls/pull/401
• build: allow installation with typeguard 4.x by @zanieb in https://github.com/openlawlibrary/pygls/pull/405