Bump mypy from 1.11.2 to 1.12.1 (mongodb#1953)

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

Author: dependabot[bot]

requirements/typing.txt

@@ -1,4 +1,4 @@
-mypy==1.11.2
+mypy==1.12.1
 pyright==1.1.384
 typing_extensions
 -r ./encryption.txt