Merge pull request #37 from mbdevpl/dependabot/pip/mypy-approx-eq-2.1

build(deps): update mypy requirement from ~=1.5 to ~=2.1

Author: mbdevpl

requirements_ci.txt

@@ -2,7 +2,7 @@
 codecov ~= 2.1
 coverage ~= 7.2
 flake518 ~= 1.6
-mypy ~= 1.5
+mypy ~= 2.1
 pydocstyle ~= 6.3
 pylint ~= 3.3; python_version < '3.10'
 pylint ~= 4.0; python_version >= '3.10'