go.mod: sync grpc dependencies with k6 core

[roobre]

Description

At some point during the latest dependency additions, we upgraded google.golang.org/genproto to a version different to what k6 core is using. The new version we introduced carried a refactor of the paths of a number of submodules in this package. This caused builds to break when the go toolchain detected that the same package was provided by multiple modules:

k6 imports
	github.com/grafana/xk6-disruptor imports
	go.k6.io/k6/js/modules imports
	go.k6.io/k6/loader tested by
	go.k6.io/k6/loader.test imports
	go.k6.io/k6/lib/testutils/httpmultibin imports
	google.golang.org/grpc/status imports
	google.golang.org/genproto/googleapis/rpc/status: ambiguous import: found package google.golang.org/genproto/googleapis/rpc/status in multiple modules:
	google.golang.org/genproto v0.0.0-20230410155749-daa745c078e1 (/go/pkg/mod/google.golang.org/genproto@v0.0.0-20230410155749-daa745c078e1/googleapis/rpc/status)
	google.golang.org/genproto/googleapis/rpc v0.0.0-20230525234030-28d5490b6b19 (/go/pkg/mod/google.golang.org/genproto/googleapis/rpc@v0.0.0-20230525234030-28d5490b6b19/status)

These changes were tested to be working by means of:

docker run --rm -it -u "$(id -u):$(id -g)" -v "${PWD}:/xk6" grafana/xk6 build v0.46.0 --with github.com/grafana/xk6-disruptor@e1e50d5c92cf5eb799614769e088e12625f2c0cb

Reported in #330

Checklist:

• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works.
• I have run linter locally (make lint) and all checks pass.
• I have run tests locally (make test) and all tests pass.
• I have run relevant e2e test locally (make e2e-xxx for agent, disruptors, kubernetes or cluster related changes)
• Any dependent changes have been merged and published in downstream modules

[roobre]

This is the conflicting dependency

[roobre]

Apparently, testcontainers-go v0.23.0 pulled the updated version.