requirements[dev]: Upgrade mypy from ~=1.5.0 to ~=1.6.0.

This requires an update of a type ignore in convert-unicode-emoji-data,
which is necessary due to the imported file being conditionally present.

CI and local Python 3.9 require different type ignore specifiers, so
this also adds 'unused-ignore', to avoid errors when the other type
ignore is apparently not used on the other platform.

Author: neiljp

setup.py

@@ -42,7 +42,7 @@ def long_description():
 
 typing_deps = [
     "lxml-stubs",
-    "mypy~=1.5.0",
+    "mypy~=1.6.0",
     "types-beautifulsoup4",
     "types-pygments",
     "types-python-dateutil",

tools/convert-unicode-emoji-data

@@ -8,7 +8,7 @@ from pathlib import Path, PurePath
 
 try:
     # Ignored for type-checking, as it is a temporary file, deleted at the end of file
-    from zulipterminal.unicode_emoji_dict import (  # type: ignore [import]
+    from zulipterminal.unicode_emoji_dict import (  # type: ignore [import-not-found,import-untyped,unused-ignore]
         EMOJI_NAME_MAPS,
     )
 except ModuleNotFoundError: