[$] Development statistics for the 7.3 kernel

Linus Torvalds released the 7.3 kernel, at the end of the usual nine-week development cycle, on October 18. This cycle, abundantly fueled by LLM-assisted contributions, broke just about every record imaginable. As usual, we have compiled some statistics showing how this release, which is expected to be the next long-term-support (LTS) kernel, came together. Also included is an attempt to determine whether automated patch review is actually reducing the number of bugs introduced into the kernel.