Bump pipdeptree from 2.26.0 to 2.26.1 in /src/requirements (#1826)

* Bump pipdeptree from 2.26.0 to 2.26.1 in /src/requirements

Bumps [pipdeptree](https://github.com/tox-dev/pipdeptree) from 2.26.0 to 2.26.1.
- [Release notes](https://github.com/tox-dev/pipdeptree/releases)
- [Commits](tox-dev/pipdeptree@2.26.0...2.26.1)

---
updated-dependencies:
- dependency-name: pipdeptree
  dependency-version: 2.26.1
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: dependabot[bot]

src/requirements/dev.txt

@@ -7,4 +7,4 @@ pre-commit==4.2.0
 hypothesis==6.131.3
 tblib==3.1.0
 unittest-xml-reporting==3.2.0
-pipdeptree==2.26.0
+pipdeptree==2.26.1

src/utils/mixins.py

@@ -51,7 +51,6 @@ def dispatch(self, request, *args, **kwargs):
         raise PermissionDenied()
 
 
-
 class AnyTeamMemberRequiredMixin(BaseTeamPermRequiredMixin):
     """Mixin for views available to anyone with a "camps.<team>_team_member" permission for any team.
 
@@ -81,7 +80,8 @@ class AnyTeamFacilitatorRequiredMixin(BaseTeamPermRequiredMixin):
 class AnyTeamPosRequiredMixin(BaseTeamPermRequiredMixin):
     """Mixin for views available to anyone with a "camps.<team>_team_pos" permission for any team.
 
-    Currently used to control access to the backoffice POS list, POS Transaction List, POS sale list, POS product list, and POS Product Cost List views."""
+    Currently used to control access to the backoffice POS list, POS Transaction List, POS sale list, POS product list, and POS Product Cost List views.
+    """
 
     perm = "pos"