Bump the dev-dependencies group with 2 updates

Updates the requirements on [pvi](https://github.com/epics-containers/pvi) and [pytest-asyncio](https://github.com/pytest-dev/pytest-asyncio) to permit the latest version.

Updates `pvi` to 0.8.1
- [Release notes](https://github.com/epics-containers/pvi/releases)
- [Commits](epics-containers/pvi@0.7...0.8.1)

Updates `pytest-asyncio` from 0.21.1 to 0.23.6
- [Release notes](https://github.com/pytest-dev/pytest-asyncio/releases)
- [Commits](pytest-dev/pytest-asyncio@v0.21.1...v0.23.6)

---
updated-dependencies:
- dependency-name: pvi
  dependency-type: direct:production
  dependency-group: dev-dependencies
- dependency-name: pytest-asyncio
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: dev-dependencies
...

Signed-off-by: dependabot[bot] <[email protected]>

pyproject.toml

@@ -18,7 +18,7 @@ dependencies = [
     "h5py",
     "softioc>=4.4.0",
     "pandablocks~=0.8.0",
-    "pvi~=0.7.0",
+    "pvi>=0.7,<0.9",
     "typing-extensions;python_version<'3.8'",
 ] # Add project dependencies here, e.g. ["click", "numpy"]
 dynamic = ["version"]
@@ -38,7 +38,7 @@ dev = [
     "pre-commit",
     "p4p",
     "pydata-sphinx-theme>=0.12",
-    "pytest-asyncio==0.21.1",    # https://github.com/PandABlocks/PandABlocks-ioc/issues/84
+    "pytest-asyncio==0.23.6",    # https://github.com/PandABlocks/PandABlocks-ioc/issues/84
     "pytest-cov",
     "ruff",
     "sphinx-autobuild",