Bump version of safety and update lock file.

[gmmajal]

Relevant issue: #106

Background info: # any relevant background info for additional context, references to documentations etc.

• dependabot has flagged vulnerabilities inside the authlib package: https://github.com/zbw/stwfsapy/security/dependabot/29 and https://github.com/zbw/stwfsapy/security/dependabot/30.
• safety has a dependency on the authlib package. We need to bump the version of safety to mitigate the aforementioned vulnerabilities.

Changes introduced: # list changes to the code repo made in this pull request

• Updated the version of safety in the pyproject.toml file.
• Updated the poetry.lock file.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (2ef825f) to head (77c0d54).
⚠️ Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##            master      #107   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           16        16           
  Lines          943       943           
=========================================
  Hits           943       943           

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