Update caikit[runtime-grpc,runtime-http] requirement

Updates the requirements on [caikit[runtime-grpc,runtime-http]](https://github.com/caikit/caikit) to permit the latest version.
- [Release notes](https://github.com/caikit/caikit/releases)
- [Changelog](https://github.com/caikit/caikit/blob/main/releases.md)
- [Commits](caikit/caikit@v0.26.34...v0.27.0)

---
updated-dependencies:
- dependency-name: caikit[runtime-grpc,runtime-http]
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

pyproject.toml

@@ -14,7 +14,7 @@ classifiers=[
     "License :: OSI Approved :: Apache Software License"
 ]
 dependencies = [
-    "caikit[runtime-grpc,runtime-http]>=0.26.34,<0.27.0",
+    "caikit[runtime-grpc,runtime-http]>=0.26.34,<0.28.0",
     "caikit-tgis-backend>=0.1.36,<0.2.0",
     # TODO: loosen dependencies
     "grpcio>=1.62.2", # explicitly pin grpc dependencies to a recent version to avoid pip backtracking