Bump pip-tools from 6.3.0 to 6.4.0dependabot/pip/pip-tools-6.4.0

Bumps [pip-tools](https://github.com/jazzband/pip-tools) from 6.3.0 to 6.4.0.
- [Release notes](https://github.com/jazzband/pip-tools/releases)
- [Changelog](https://github.com/jazzband/pip-tools/blob/master/CHANGELOG.md)
- [Commits](https://github.com/jazzband/pip-tools/compare/6.3.0...6.4.0)

---
updated-dependencies:
- dependency-name: pip-tools
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

1 files changed, 5 insertions, 5 deletions

diff --git a/requirements/dev.txt b/requirements/dev.txt
index b212c89..98e090c 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -40,10 +40,10 @@ jinja2==3.0.1
     # via sphinx
 markupsafe==2.0.1
     # via jinja2
-mypy-extensions==0.4.3
-    # via mypy
 mypy==0.910
     # via -r requirements/typing.in
+mypy-extensions==0.4.3
+    # via mypy
 nodeenv==1.6.0
     # via pre-commit
 packaging==21.0
@@ -56,7 +56,7 @@ pallets-sphinx-themes==2.0.1
     # via -r requirements/docs.in
 pep517==0.11.0
     # via pip-tools
-pip-tools==6.3.0
+pip-tools==6.4.0
     # via -r requirements/dev.in
 platformdirs==2.4.0
     # via virtualenv
@@ -88,14 +88,14 @@ six==1.16.0
     #   virtualenv
 snowballstemmer==2.1.0
     # via sphinx
-sphinx-issues==1.2.0
-    # via -r requirements/docs.in
 sphinx==4.2.0
     # via
     #   -r requirements/docs.in
     #   pallets-sphinx-themes
     #   sphinx-issues
     #   sphinxcontrib-log-cabinet
+sphinx-issues==1.2.0
+    # via -r requirements/docs.in
 sphinxcontrib-applehelp==1.0.2
     # via sphinx
 sphinxcontrib-devhelp==1.0.2