l10n: bg.po: Updated Bulgarian translation (5610t) #39

Job	Run time
config	3s
fuzz smoke test	39s
win+VS build	0s
linux32 (daald/ubuntu32:xenial)	2m 29s
pedantic (fedora)	2m 27s
linux-musl (alpine)	2m 28s
documentation	2m 37s
linux-asan-ubsan (ubuntu-latest)	2m 40s
linux-gcc (ubuntu-20.04)	2m 39s
linux-gcc-default (ubuntu-latest)	2m 38s
linux-sha256 (ubuntu-latest)	2m 37s
linux-leaks (ubuntu-latest)	2m 38s
linux-TEST-vars (ubuntu-20.04)	2m 37s
osx-clang (macos-13)	2m 57s
osx-gcc (macos-13)	2m 56s
sparse	2m 42s
static-analysis	2m 39s
win build	2m 26s
win+VS test	0s
win test	0s
	40m 12s

Provide feedback