Update dependency grpc/grpc-go to v1.76.0 (#222)

| datasource      | package      | from    | to      |
| --------------- | ------------ | ------- | ------- |
| github-releases | grpc/grpc-go | v1.75.1 | v1.76.0 |

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

Author: renovate[bot]

grpc/Dockerfile

@@ -2,7 +2,7 @@
 FROM golang:1.25 AS builder
 
 # renovate: datasource=github-releases depName=grpc/grpc-go
-ARG GRPC_GO_VERSION=v1.75.1
+ARG GRPC_GO_VERSION=v1.76.0
 
 ADD https://github.com/grpc/grpc-go.git#${GRPC_GO_VERSION} /grpc-go