build(deps): Bump mypy from 0.990 to 0.991 in /requirements (#123)

Bumps [mypy](https://github.com/python/mypy) from 0.990 to 0.991.
- [Release notes](https://github.com/python/mypy/releases)
- [Commits](https://github.com/python/mypy/compare/v0.990...v0.991)

---
updated-dependencies:
- dependency-name: mypy
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

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

requirements/test.txt

@@ -7,23 +7,23 @@
 attrs==22.1.0
     # via pytest
 black==22.10.0
-    # via -r requirements/test.in
+    # via -r test.in
 certifi==2022.12.7
     # via
-    #   -r requirements/test.in
+    #   -r test.in
     #   requests
 charset-normalizer==2.1.1
     # via requests
 click==8.1.3
     # via
-    #   -r requirements/test.in
+    #   -r test.in
     #   black
 coverage[toml]==6.4.4
     # via
-    #   -r requirements/test.in
+    #   -r test.in
     #   pytest-cov
 flake8==5.0.4
-    # via -r requirements/test.in
+    # via -r test.in
 idna==3.4
     # via
     #   requests
@@ -31,15 +31,15 @@ idna==3.4
 iniconfig==1.1.1
     # via pytest
 label-studio-sdk==0.0.15
-    # via -r requirements/test.in
+    # via -r test.in
 lxml==4.9.1
     # via label-studio-sdk
 mccabe==0.7.0
     # via flake8
 multidict==6.0.2
     # via yarl
-mypy==0.990
-    # via -r requirements/test.in
+mypy==0.991
+    # via -r test.in
 mypy-extensions==0.4.3
     # via
     #   black
@@ -65,7 +65,7 @@ pyparsing==3.0.9
 pytest==7.1.3
     # via pytest-cov
 pytest-cov==4.0.0
-    # via -r requirements/test.in
+    # via -r test.in
 pyyaml==6.0
     # via vcrpy
 requests==2.28.1
@@ -73,11 +73,7 @@ requests==2.28.1
 six==1.16.0
     # via vcrpy
 tomli==2.0.1
-    # via
-    #   black
-    #   coverage
-    #   mypy
-    #   pytest
+    # via pytest
 typing-extensions==4.3.0
     # via
     #   mypy
@@ -85,7 +81,7 @@ typing-extensions==4.3.0
 urllib3==1.26.12
     # via requests
 vcrpy==4.2.1
-    # via -r requirements/test.in
+    # via -r test.in
 wrapt==1.14.1
     # via vcrpy
 yarl==1.8.1