Ensure we constrain test dependencies with uv (#446)

tox.ini

@@ -80,6 +80,7 @@ setenv =
   COVERAGE_PROCESS_START={toxinidir}/pyproject.toml
   PIP_DISABLE_PIP_VERSION_CHECK = 1
   PIP_CONSTRAINT = {toxinidir}/.config/constraints.txt
+  UV_CONSTRAINT = {toxinidir}/.config/constraints.txt
   PRE_COMMIT_COLOR = always
   FORCE_COLOR = 1
 allowlist_externals =
@@ -108,6 +109,7 @@ passenv =
 setenv =
   {[testenv]setenv}
   PIP_CONSTRAINT = /dev/null
+  UV_CONSTRAINT = /dev/null
 
 [testenv:deps]
 description = Bump all test dependencies
@@ -121,6 +123,7 @@ commands =
 setenv =
   {[testenv]setenv}
   PIP_CONSTRAINT = /dev/null
+  UV_CONSTRAINT = /dev/null
 
 [testenv:pkg]
 description =
@@ -183,6 +186,7 @@ deps =
 setenv =
   {[testenv]setenv}
   PIP_CONSTRAINT = /dev/null
+  UV_CONSTRAINT = /dev/null
   PYTEST_REQPASS = 0
 changedir = {envdir}/tmp/ansible-lint
 allowlist_externals =