docs(samples): updates to urllib3 constraint for Python 3.7

[chalmerlowe]

There are some dependency issues when trying to run with Python 3.7 in the geography samples folder. In particular the following Error is raised during testing:

ERROR: Could not find a version that satisfies the requirement urllib3==2.1.0 (from versions: 0.3, 1.0, 1.0.1, 1.0.2, 1.1, 1.2, 1.2.1,
1.2.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.7.1, 1.8, 1.8.2, 1.8.3, 1.9, 1.9.1, 
1.10, 1.10.1, 1.10.2, 1.10.3, 1.10.4, 1.11, 1.12, 1.13, 1.13.1, 1.14, 
1.15, 1.15.1, 1.16, 1.17, 1.18, 1.18.1, 1.19, 1.19.1, 1.20, 1.21, 1.21.1, 
1.22, 1.23, 1.24, 1.24.1, 1.24.2, 1.24.3, 1.25.2, 1.25.3, 1.25.4, 1.25.5, 
1.25.6, 1.25.7, 1.25.8, 1.25.9, 1.25.10, 1.25.11, 1.26.0, 1.26.1, 1.26.2, 
1.26.3, 1.26.4, 1.26.5, 1.26.6, 1.26.7, 1.26.8, 1.26.9, 1.26.10, 1.26.11, 
1.26.12, 1.26.13, 1.26.14, 1.26.15, 1.26.16, 1.26.17, 1.26.18, 2.0.0a1, 
2.0.0a2, 2.0.0a3, 2.0.0a4, 2.0.2, 2.0.3, 2.0.4, 2.0.5, 2.0.6, 2.0.7)
ERROR: No matching distribution found for urllib3==2.1.0

Version 2.1.0 is not compatible with Python 3.7.

When running under Python 3.7, setting a constraint for urllib3 to a version that was compatible with 3.7 (ie <1.25) enables the test suite to pass.

Similarly, setting the requirement for 3.8+ versions of Python ensures that all the tests across the test suite pass.

[parthea]

google-auth 2.22.0 depends on urllib3<2.0

A newer version of google-auth is needed