protonup-qt: update to 2.15.1

[github-actions]

Automated package update.

Package: protonup-qt
Version: 2.15.0 -> 2.15.1

Checks:

• pkgctl version upgrade: completed
• checksums: updated by pkgctl version upgrade
• .SRCINFO: regenerated
• makepkg --verifysource: false

Risk flags:

• none detected by static diff scan

Diff summary:

 protonup-qt/.SRCINFO | 6 +++---
 protonup-qt/PKGBUILD | 4 ++--
 2 files changed, 5 insertions(+), 5 deletions(-)