`pom` task write :repositories

Question/Improvement:
Is there a way to write the repositories in the generated `pom.xml`?

Something like
```

clojars.org
https://repo.clojars.org

```
Maybe taking an additional `:repositories` argument to the `pom` task?

Reason: use `snyk` to check for vulnerabilities https://github.com/snyk/snyk/issues/207

Start by locating the `pom` task and the code that generates `pom.xml`. Determine how an optional `:repositories` argument should map to repository entries, then verify that the generated POM includes the requested Clojars repository.

Written by the indexing model from the issue text.