Bump protobuf from 3.14.0 to 5.26.1

Bumps [protobuf](https://github.com/protocolbuffers/protobuf) from 3.14.0 to 5.26.1.
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/protobuf_release.bzl)
- [Commits](protocolbuffers/protobuf@v3.14.0...v5.26.1)

---
updated-dependencies:
- dependency-name: protobuf
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

pyproject.toml

@@ -46,12 +46,12 @@ rpi = ['apigpio-mpf==0.0.4']
 uvloop = ['uvloop==0.19.0']  # Oct 4 2023, msin asyncio loop
 vpe = ['grpcio_tools==1.34.0',
        'grpcio==1.34.0',
-       'protobuf==3.14.0',]
+       'protobuf==5.26.1',]
 all = [  # currently no way to just use the names from above afaik?
     'prompt_toolkit==3.0.43', 'asciimatics==1.15.0', 'terminaltables==3.1.0',
     'requests==2.28.2', 'irc==19.0.1', 'smbus2_asyncio==0.0.5',
     'python-osc==1.8.3', 'pyusb==1.1.0', 'apigpio-mpf==0.0.4',
-    'grpcio_tools==1.34.0', 'grpcio==1.34.0', 'protobuf==3.14.0',
+    'grpcio_tools==1.34.0', 'grpcio==1.34.0', 'protobuf==5.26.1',
     'uvloop==0.19.0'
     ]