chore(release): prepare for 6.2.15

Signed-off-by: Leonidas Spyropoulos <artafinde@archlinux.org>

pyproject.toml

@@ -16,7 +16,7 @@ combine_as_imports = true
 #
 [tool.poetry]
 name = "aurweb"
-version = "v6.2.14"
+version = "v6.2.15"
 license = "GPL-2.0-only"
 description = "Source code for the Arch User Repository's website"
 homepage = "https://aur.archlinux.org"