Change to zstd compressed instead of gz-compressed tarballs. zstd
compresses 7-8 times faster and decompresses 2-3 times faster.
This change also make sharing tarballs between different branches
possible, because OpenWrt 25.12 uses zstd as default.
Signed-off-by: Andreas Gnau <andreas.gnau@iopsys.eu>
jq is used inside packetcapture but it is not declared as a dependency.
Remove this usage of jq.
jq is a complex piece of software that requires security maintenance and
adds bloat to the image. Using existing tools like jshn and jsonfilter
is preferred where the additional functionality provided by jq is not
required.
Signed-off-by: Andreas Gnau <andreas.gnau@iopsys.eu>
