Final depreciation

• Add depreciation warning
• Bump major version 1.4 → 2.0
• Replace old juigitlab url with new gitlab.esa.int

Minor final fixes to managed the CI:

• Fix AGM log errors
• Fix docs dependency
• Fix linters errors
• Fix SSL context in python 3.13
• Update poetry lock

Closes #14 (closed), #10 (closed), #6 (closed), #4 (closed), !12 (closed).