Bump pip-tools from 5.5.0 to 6.0.1 in /requirements

Bumps [pip-tools](https://github.com/jazzband/pip-tools) from 5.5.0 to 6.0.1.
- [Release notes](https://github.com/jazzband/pip-tools/releases)
- [Changelog](https://github.com/jazzband/pip-tools/blob/master/CHANGELOG.md)
- [Commits](jazzband/pip-tools@5.5.0...6.0.1)

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

requirements/requirements-ci.txt

@@ -412,6 +412,10 @@ pathspec==0.8.0
     #   black
 pdbpp==0.10.2
     # via -r requirements-dev.txt
+pep517==0.10.0
+    # via
+    #   -r requirements-dev.txt
+    #   pip-tools
 pexpect==4.8.0
     # via
     #   -r requirements-dev.txt
@@ -428,7 +432,7 @@ pillow==8.1.1
     # via
     #   -r requirements-dev.txt
     #   matrix-synapse
-pip-tools==5.5.0
+pip-tools==6.0.1
     # via -r requirements-dev.txt
 pluggy==0.12.0
     # via
@@ -660,6 +664,7 @@ toml==0.10.2
     # via
     #   -r requirements-dev.txt
     #   black
+    #   pep517
     #   pylint
     #   pytest
 toolz==0.9.0

requirements/requirements-dev.in

@@ -9,7 +9,7 @@
 # -r requirements-docs.txt
 
 # Dependencies
-pip-tools~=5.5.0  # this is used by 'deps.py'
+pip-tools~=6.0.1  # this is used by 'deps.py'
 
 # Linting
 flake8

requirements/requirements-dev.txt

@@ -360,6 +360,8 @@ pathspec==0.8.0
     # via black
 pdbpp==0.10.2
     # via -r requirements-dev.in
+pep517==0.10.0
+    # via pip-tools
 pexpect==4.8.0
     # via
     #   -r requirements-dev.in
@@ -370,7 +372,7 @@ pickleshare==0.7.5
     # via ipython
 pillow==8.1.1
     # via matrix-synapse
-pip-tools==5.5.0
+pip-tools==6.0.1
     # via -r requirements-dev.in
 pluggy==0.12.0
     # via pytest
@@ -555,6 +557,7 @@ toml==0.10.2
     # via
     #   -r requirements.txt
     #   black
+    #   pep517
     #   pylint
     #   pytest
 toolz==0.9.0