Office365: save end date of date range in the checkpoint

[squioc]

Save the end date of each date ranges, computed from the pulling period, in the checkpoint, in order to always progress;
and not wait that the connector caught back the delay to save the end date.

[github-actions]

Test Results

53 tests  ±0   49 ✅ ±0   2s ⏱️ ±0s
 1 suites ±0    4 💤 ±0 
 1 files   ±0    0 ❌ ±0 

Results for commit 26b4762. ± Comparison against base commit 6b5f7a4.

♻️ This comment has been updated with latest results.

[codecov]

Codecov Report

Attention: Patch coverage is 75.00000% with 2 lines in your changes missing coverage. Please review.

Project coverage is 91.49%. Comparing base (6b5f7a4) to head (26b4762).
Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
Office365/office365/management_api/connector.py	75.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1247      +/-   ##
==========================================
+ Coverage   91.15%   91.49%   +0.33%     
==========================================
  Files          50       63      +13     
  Lines        2251     2668     +417     
  Branches       89       89              
==========================================
+ Hits         2052     2441     +389     
- Misses        167      195      +28     
  Partials       32       32              

Flag	Coverage Δ
Office365	93.28% <75.00%> (?)

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