Add packages to packages.yaml (#7339)

tools/packages.yaml

@@ -3219,6 +3219,11 @@ url: https://github.com/kubernetes/kubernetes/releases
 activity: high
 ---
 kind: url
+name: kupfer
+url: https://github.com/kupferlauncher/kupfer/releases
+activity: low
+---
+kind: url
 name: kwiml
 url: https://gitlab.kitware.com/utils/kwiml/
 activity: low
@@ -4119,6 +4124,11 @@ url: http://www.libimobiledevice.org/
 activity: none
 ---
 kind: url
+name: libpng
+url: https://downloads.sourceforge.net/project/libpng/libpng16
+activity: none
+---
+kind: url
 name: libportal
 url: https://github.com/flatpak/libportal/releases/
 activity: low
@@ -5209,6 +5219,11 @@ url: https://github.com/beltoforion/muparser/releases
 activity: low
 ---
 kind: url
+name: mupdf
+url: https://mupdf.com/downloads/archive/
+activity: medium
+---
+kind: url
 name: musl
 url: https://www.musl-libc.org/releases/
 activity: low
@@ -7879,6 +7894,11 @@ url: https://github.com/wxWidgets/wxWidgets/releases/
 activity: low
 ---
 kind: url
+name: wxwidgets31
+url: https://github.com/wxWidgets/wxWidgets/releases/
+activity: low
+---
+kind: url
 name: xa
 url: https://www.floodgap.com/retrotech/xa/dists/
 activity: none