Use make for zoekt-indexer

What does this MR do?

We've added the -version argument to gitlab-zoekt-indexer in gitlab-org/gitlab-zoekt-indexer!25 (merged), but it only works properly when you use make. This MR switches build from go build to make to fix -version output.

Before

$ /bin/gitlab-zoekt-indexer -version
/bin/gitlab-zoekt-indexer dev (built at: )

After

$ /bin/gitlab-zoekt-indexer -version
/bin/gitlab-zoekt-indexer 2023.08.08-e790f4b (built at: 2023-08-08 11:13 UTC)

How to test it

1. Checkout master
2. docker build -t registry.gitlab.com/gitlab-org/build/cng/gitlab-zoekt-indexer:master -f gitlab-zoekt-indexer/Dockerfile gitlab-zoekt-indexer
3. Verify that docker run --rm registry.gitlab.com/gitlab-org/build/cng/gitlab-zoekt-indexer:master /bin/gitlab-zoekt-indexer -version returns incomplete version
4. Checkout this branch 421288-zoekt-indexer-use-make
5. Rebuild the image docker build -t registry.gitlab.com/gitlab-org/build/cng/gitlab-zoekt-indexer:master -f gitlab-zoekt-indexer/Dockerfile gitlab-zoekt-indexer
6. Verify that docker run --rm registry.gitlab.com/gitlab-org/build/cng/gitlab-zoekt-indexer:master /bin/gitlab-zoekt-indexer -version now returns full version with SHA

Related issues

Closes gitlab-org/gitlab#421288 (closed)

Checklist

See Definition of done.

For anything in this list which will not be completed, please provide a reason in the MR discussion

Required

• Merge Request Title, and Description are up to date, accurate, and descriptive
• MR targeting the appropriate branch
• MR has a green pipeline on GitLab.com
• When ready for review, MR is labeled "~workflow::ready for review" per the Distribution MR workflow

Expected (please provide an explanation if not completing)

• Test plan indicating conditions for success has been posted and passes
• Documentation created/updated
• Integration tests added to GitLab QA
• The impact any change in container size has should be evaluated
• New dependencies are managed with dependencies.io