Bump golang from 1.22 to 1.23 in /grpc (#66)

Bumps golang from 1.22 to 1.23.

---
updated-dependencies:
- dependency-name: golang
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

grpc/Dockerfile

@@ -1,5 +1,5 @@
 # syntax=docker/dockerfile:1.5
-FROM golang:1.22 as builder
+FROM golang:1.23 as builder
 
 RUN git clone -b v1.63.0 --depth 1 https://github.com/grpc/grpc-go
 WORKDIR /go/grpc-go/examples