There's a merged pull request on the void-packages repository

prometheus: update to 2.49.0.
https://github.com/void-linux/void-packages/pull/47935

Description:
#### Testing the changes
- I tested the changes in this PR: **YES**

The current package of Prometheus in the repos has missing version information. Pointing Version flags to github.com/prometheus/common sets things correctly:

```
# prometheus --version
prometheus, version 2.48.1 (branch: 2.48.1, revision: 2.48.1)
  build user:       VoidLinux
  build date:       20231228-02:47:53
  go version:       go1.21.5
  platform:         linux/amd64
  tags:             netgo,builtinassets
```