[docs] Add changelog 05-December-2023

[danimtb]

Latest changes introduced in the build service

[uilianries]

Summary

• When using Mac M1 as a build machine, the build profile should according to avoid mismatch when testing over Mac Intel machines.
• Add support to Mac M1 machines in C3I Jenkins, both Mac Intel and M1 are now supported when building packages.
• The Slack messenger is used to inform internally about build status. In case of failure of this extension, the CI build should not be affected.
• Epochs are no longer required, this is the last step of removing them. When a new configuration is needed (e.g. new compiler version), it will be built in advance and moved to Conan Center.
• When building packages with shared option or without shared option present, packages with shared=True should be built with lowest priority to avoid missing packages when testing. See [service] v2 pipeline: always try to build with -o *:shared=True when there is no shared option and it's not a header-only recipe #21283

[uilianries]

LGTM