build(deps): bump tox from 4.6.1 to 4.6.3 in /requirements

Bumps [tox](https://github.com/tox-dev/tox) from 4.6.1 to 4.6.3.
- [Release notes](https://github.com/tox-dev/tox/releases)
- [Changelog](https://github.com/tox-dev/tox/blob/main/docs/changelog.rst)
- [Commits](tox-dev/tox@4.6.1...4.6.3)

---
updated-dependencies:
- dependency-name: tox
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

requirements/integration.txt

@@ -35,7 +35,7 @@ packaging==23.1
     #   pyproject-api
     #   tox
 pip-compile-multi==2.6.3
-    # via -r requirements/integration.in
+    # via -r integration.in
 pip-tools==6.13.0
     # via pip-compile-multi
 platformdirs==3.5.3
@@ -45,23 +45,18 @@ platformdirs==3.5.3
 pluggy==1.0.0
     # via tox
 pre-commit==3.3.3
-    # via -r requirements/integration.in
-pyproject-api==1.5.1
+    # via -r integration.in
+pyproject-api==1.5.2
     # via tox
 pyproject-hooks==1.0.0
     # via build
 pyyaml==5.4.1
     # via pre-commit
-tomli==2.0.1
-    # via
-    #   build
-    #   pyproject-api
-    #   tox
 toposort==1.10
     # via pip-compile-multi
-tox==4.6.1
-    # via -r requirements/integration.in
-virtualenv==20.23.0
+tox==4.6.3
+    # via -r integration.in
+virtualenv==20.23.1
     # via
     #   pre-commit
     #   tox