This change is only for Benchling's internal use of the package. It merges changes from upstream main to our prod/2.x fork, bringing us to parity with all upstream fixes and new features so far. (This does not mean our fork is now the same as main - there are still areas where we have deliberately made changes for our own use, like removing pdm, plus fixes/features in our fork that have not been accepted to main, like the functional tests.)

The following upstream PRs are included:

• feat: Support Ruff 0.8 openapi-generators/openapi-python-client#1169, feat: Support httpx 0.28 openapi-generators/openapi-python-client#1172, fix: Support Typer 0.14 and 0.15 openapi-generators/openapi-python-client#1173, Fix minimum attrs version openapi-generators/openapi-python-client#1184, (dependency updates)
• Properly rebuild Pydantic models if necessary openapi-generators/openapi-python-client#1176 (Pydantic bugfix - this replaces our own less-optimal fix on the fork in eng: fix forward type reference in Pydantic schemas BNCH-112697 #223)
• Don't fully delete output directories openapi-generators/openapi-python-client#1183
• fix: import cast for required const properties, since it's used in the template openapi-generators/openapi-python-client#1153
• fix: allow required fields list to be specified as empty (#651) openapi-generators/openapi-python-client#1149

Many other changes in the diff are simply replacements of Dict[T], List[T], etc. with dict[T], list[T], etc. as a style change due to dropping Python 3.8.