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

Remove v from the detected version match group
https://github.com/void-linux/void-packages/pull/19789

Description:
The source archives for perl-Test-MockModule have a 'v' placed before the version string. This is throwing off the update-check utility:

```
./xbps-src update-check perl-Test-MockModule
perl-Test-MockModule-0.172.0 -> perl-Test-MockModule-v0.170.0
perl-Test-MockModule-0.172.0 -> perl-Test-MockModule-v0.171.0
perl-Test-MockModule-0.172.0 -> perl-Test-MockModule-v0.172.0
```
By making v an optional character before the version capture group, we can now return only decimals for a version. 

```
grep "^version=v" srcpkgs/*/template
srcpkgs/ci20-uboot/template:version=v2013.10
srcpkgs/odroid-u2-uboot/template:version=v2010.12
srcpkgs/perl-Test-Trap/template:version=v0.3.4
```

It looks like there are only three templates that explicitly have 'v' incorrectly embedded in their `version=` value. Both uboot templates are easily fixed. The perl-Test-Trap template is the opposite problem of perl-Test-MockModule, the 'v' should not be part of the version, but it does mean then that the update-check does correctly parse things. 

Fixing up the version value in these three templates won't be a problem, but I'm unsure how xbps will handle the version string changing or if it will impact people with the packages already installed. 

If it's simply adjusting the value / things that reference it, then revbumping each, I'll attach them as separate commits to this PR.