Pin collector image in e2e tests

[MrAlias]

We currently use the latest collector image for our testing:

opentelemetry-go-instrumentation/.github/workflows/e2e/k8s/collector-helm-values.yml

Line 31 in d447af1

tag: "latest"

This means any breaking changes to the image will be introduced to our CI system without review (e.g. https://github.com/open-telemetry/opentelemetry-go-instrumentation/actions/runs/12377825359/job/34549117158?pr=1431)

We need to pin this image. We also need to ensure that renovate can help in the upgrade process.

[MrAlias]

Related to open-telemetry/opentelemetry-collector-releases#783

[MrAlias]

#1443 provides a temporary fix. We still need to develop a solution that will allow renovate to update the collector image version.

Likely, this means wrapping the collector image in our own Dockerfile.

[MrAlias]

#1443 provides a temporary fix. We still need to develop a solution that will allow renovate to update the collector image version.

Likely, this means wrapping the collector image in our own Dockerfile.

Possible solution would be to follow what is planned here: https://github.com/open-telemetry/opentelemetry-go-instrumentation/pull/1140/files#diff-292d6d00bcf2d0d55e146ba46e229366f0ed73fcb0ac11c4885a029f014161bb