cgit urls return 404 for not url-encoded pkgbases

Checklist

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Description

pkgbase was previously urlencoded in the php code, but not in the current python version anymore. This leads to 404 for PKGBUILD/source links.

Reproduction

https://aur.archlinux.org/packages/blast+

"View PKGBUILD" points to https://aur.archlinux.org/cgit/aur.git/tree/PKGBUILD?h=blast+ which is 404.

Logs

n/a

Version(s)

v6.0.11

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