Handle the situation when there no tags are present in the repository

[tonyo]

Environment

What version are you running? 1.2.2

Steps to Reproduce

Run craft prepare step on the repository that has no Git tags.

Expected Result

prepare runs successfully.

Actual Result

The following error happened:

Error:  fatal: No names found, cannot describe anything.

  
  at Object.action (/usr/local/bin/craft:549:10630)
  at uMe.exec (/usr/local/bin/craft:549:10942)
  at /usr/local/bin/craft:548:6689
  at new Promise (<anonymous>)
  at lA.handleTaskData (/usr/local/bin/craft:548:6578)
  at lA.<anonymous> (/usr/local/bin/craft:548:6204)
  at Generator.next (<anonymous>)
  at a (/usr/local/bin/craft:545:1507)
  at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
Error: Process completed with exit code 1.

It looks like craft prepare fails here when trying to fetch the latest tag from the repository:

craft/src/commands/prepare.ts

Line 500 in d0bfdaf

const oldVersion = await getLatestTag(git);

...or more specifically, here:

craft/src/utils/git.ts

Line 38 in d0bfdaf

return (await git.raw('describe', '--tags', '--abbrev=0')).trim();

Suggestion

getLatestTag() should not fail if there are no existing tags on the repository. The default return value can be an empty string, for example.

[tonyo]

Happened today when releasing https://github.com/getsentry/sentry-maven-plugin

[asottile-sentry]

dupe #342