[request] Please bump Firefox to 154.0.1

[runlevel5]

The downstream patches for JIT can be found at https://github.com/runlevel5/firefox-ppc64/releases/tag/FIREFOX_154_0_1_RELEASE_PPC64

[kth5]

This is in progress but build-resources are tight ;)

[kth5]

It's up in [testing] for powerpc64le already but I am still messing with the big-endian build which should finish today. However, we need to keep support for down to G5 so if the JIT patches don't consider falling back to interpretation, I may have to hack a bit more.