PrivateVPN: Update SE Stockholm IP

[jucor]

Breaking change

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Proposed change

Previous IP doesn't respond anymore. 
Replacing with one obtained from https://privatevpn.com/serverlist which indicates 
hostname `se-sto.pvdata.host` which resolves into various `45.130.87.XX` (including `.16`), 
not all of which are responsive. `45.130.87.16` is one of those that work.

Type of change

• Bugfix (non-breaking change which fixes an issue)
• New provider (thank you!)
• Updated provider (thank you!)
• New feature (which adds functionality to a provider script/repo usage)
• Breaking change (fix/feature causing existing functionality to break)

Additional information

I used to make do with local modifications to the configuration, but since post-#2953 versions will overwwrite them, I figured it's time to make a PR :)

• This PR fixes or closes issue: fixes #
• This PR is related to issue: relates to #2953
• Link to documentation updated (if done separately): https://...

Checklist

• The code change is tested and works locally.
• There is no commented out code in this PR.

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated

[haugene]

Hey! 👋 Thanks for contributing and sorry about the late reply.
It seems that all privatevpn configs have been updated since you opened this PR.

Please let me know if you still have issues or I will assume that it is now resolved.