chore(deps): Remove pyright version cap (#1329)

Version 1.1.407 had a bug (microsoft/pyright/issues/11060) in handling
pydantic models. Now 1.1.408 is available with a fix, we can exclude the
specific version and accept newer versions as they're released.

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: tpoliaw

pyproject.toml

@@ -50,7 +50,7 @@ dev = [
     "pre-commit",
     "pydata-sphinx-theme>=0.15.4",
     "pytest",
-    "pyright<1.1.407",             # https://github.com/bluesky/scanspec/issues/190
+    "pyright!=1.1.407",             # https://github.com/bluesky/scanspec/issues/190
     "pytest-cov",
     "pytest-asyncio",
     "responses",