Upgrade pytest 7.1.2 -> 8.3.5

Added the tests directory explicitly to the coverage/pytest command so
it doesn't pick up test directories or test_.py files elsewhere on ones
filesystem.  This has the added benefit of speeding up test collection.

Author: ghickman

Makefile

@@ -11,7 +11,7 @@ _uv:
 	pip install uv
 
 test:
-	coverage run -m pytest -vvv
+	coverage run -m pytest -vvv tests
 	coverage report
 
 mypy:

requirements.dev.txt

@@ -1,15 +1,13 @@
 # This file was autogenerated by uv via the following command:
 #    uv pip compile requirements.dev.in --output-file=requirements.dev.txt
-attrs==21.4.0
-    # via
-    #   -c requirements.prod.txt
-    #   pytest
 cfgv==3.3.1
     # via pre-commit
 coverage==6.5.0
     # via -r requirements.dev.in
 distlib==0.3.9
     # via virtualenv
+exceptiongroup==1.2.2
+    # via pytest
 factory-boy==3.2.0
     # via -r requirements.dev.in
 faker==9.3.1
@@ -34,13 +32,11 @@ packaging==25.0
     #   pytest
 platformdirs==4.3.7
     # via virtualenv
-pluggy==1.0.0
+pluggy==1.5.0
     # via pytest
 pre-commit==2.15.0
     # via -r requirements.dev.in
-py==1.11.0
-    # via pytest
-pytest==7.1.2
+pytest==8.3.5
     # via
     #   -r requirements.dev.in
     #   pytest-django