ucode: update to latest Git HEAD

ucode: update to latest Git HEAD

 - Introduces signal handling facilities
 - Fixes potentially incorrect object equality tests
 - Introduces debug library
 - Introduces log library
 - ABI version bump due to changed VM structure layout
 - Revised packaging

Changelog:

07c0317 jsdoc: switch to own custom theme
6ca08b0 jsdoc: properly handle indented documentation blocks
2a67f22 lib: add/improve documentation for require(), loadfile(), loadstring()
9993ccb uci: fix potential memory leaks in `configs()`
f56394f ci: re-trigger workflows on pull request pushes
1c18993 lib: various documentation fixes
d25dcb1 uci: add module documentation
4a8ece2 docs: use CSS and local JavaScript fixups to improve formatting
8f21cfa lib: introduce log library
8a3aefe build: auto-enable module depending on present libraries
6a01adc build: convert CMakeLists.txt into lowercase
8700665 ci: don't skip pull request workflows for `master` branch
0184d23 include: fix execvpe compat function on macOS
8b23884 uloop: rename environ variable to avoid clashing with system macro on macOS
7c209d7 types: ensure double serializatiion with decimal places
d150425 rtnl: update the link attr TODOs
d394174 rtnl: add IFLA_TARGET_NETNSID for operating in other namespaces
1227733 lib: fix documented return value for `splice()`
c9982de docs: add struct module documentation
7dde493 docs: add missing headline to debug module documentation
8f852ea types: improve comparison reliability of binary strings
6940c28 lib: introduce debug library
be07107 treewide: consolidate platform specific code in platform.c
2593270 uloop: interrupt on VM signals
97a5292 lib: add `signal()` stdlib function
1dbbb6a main: enable signal dispatching in the standalone cli interpreter
1623245 types: treat signal handler array as GC root
29b1c0d vm: introduce basic signal handling infrastructure
093684d fs: explicitly compare isatty() result
4f4f38f types: don't rely on implicit type conversion in ucv_compare()
4bee0ef docs: disable GitHub Jekyll post processing
5efb7a0 docs: further rework
33bc7bf docs: fix markup quirks
9d5e420 docs: add information about memory management and operator precedence
f1190ef docs: various improvements
f0cc841 fs: use `fseeko()` and `ftello()`
cba0c3c fs: complete function documentation coverage
f9260f7 github: drop superfluous CNAME file
c85bc74 Create CNAME
5309294 lib: add JSDoc documentation
b0f2f90 fs: add JSDoc documentation
fe086da math: add JSDoc documentation
70f9348 docs: add initial JSDoc infrastructure
24f1a56 source: fix source offset accounting
9df9160 lexer: don't count EOF token as newline
b9d8f06 ci: switch to official openwrt/gh-action-sdk

Signed-off-by: Jo-Philipp Wich <jo@mein.io>
(cherry picked from commit eacc885816fb46bf4054b0c3dd2cd1513322ad09)