They upgraded the bundled thin-vec from 0.1.0 to 0.1.2 which we already
replaced with 0.2.1 for thin-vec-big-endian, hence that patch is
re-assembled.
(cherry picked from commit 2f941f655537bd4ce2df23c336c3ae0af48f9ade)
Partly from rhel-8.4.0
(cherry picked from commit f78641b1265da0f68acaef752d75da5467b7f212)
Conflicts:
.gitignore
firefox.spec
sources