docs(samples): updates to urllib3 constraint for Python 3.7 (#1834)

* fix: updates to urllib3 constraint for Python 3.7

* refine urllib3 constraint

* revises geo reqs and rolls back contraints

* tweaking the geo sample requirements

* more tweaks to geo reqs

* more tweaks, testing arbitrary equality, 2.x version

* tweak google-auth

Author: chalmerlowe

samples/geography/requirements.txt

@@ -13,7 +13,7 @@ geopandas===0.10.2; python_version == '3.7'
 geopandas==0.13.2; python_version == '3.8'
 geopandas==0.14.1; python_version >= '3.9'
 google-api-core==2.11.1
-google-auth==2.22.0
+google-auth==2.25.2
 google-cloud-bigquery==3.11.4
 google-cloud-bigquery-storage==2.22.0
 google-cloud-core==2.3.3
@@ -45,4 +45,5 @@ Shapely==2.0.2
 six==1.16.0
 typing-extensions==4.7.1
 typing-inspect==0.9.0
-urllib3==1.26.18
+urllib3===1.26.18; python_version == '3.7'
+urllib3==2.2.1; python_version >= '3.8'

testing/constraints-3.7.txt

@@ -27,4 +27,4 @@ python-dateutil==2.7.3
 requests==2.21.0
 Shapely==1.8.4
 six==1.13.0
-tqdm==4.7.4
+tqdm==4.7.4