The current version of murmur is 1.4.230-6 which specifically depends on grpc 1.45.2-3 and protobuf 3.20.1-2, which are not in repos anymore.
$this->bbcode_second_pass_code('', 'pacman -Qi murmur
Name            : murmur
Version         : 1.4.230-6
Description     : An Open Source, low-latency, high quality voice chat software (server)
Architecture    : aarch64
URL             : https://www.mumble.info/
Licenses        : BSD
Groups          : None
Provides        : None
Depends On      : gcc-libs  glibc  openssl  qt5-base  avahi  libcap.so=2-64  libdns_sd.so=1-64  libgrpc++.so=1.45-64  libprotobuf.so=31-64  zeroc-ice
Optional Deps   : None
Required By     : None
Optional For    : None
Conflicts With  : None
Replaces        : None
Installed Size  : 4.38 MiB
Packager        : Arch Linux ARM Build System <builder+n1@archlinuxarm.org>
Build Date      : Sat May 14 23:37:51 2022
Install Date    : Thu May 19 14:48:44 2022
Install Reason  : Explicitly installed
Install Script  : Yes
Validated By    : Signature')
The current version of grpc provides libgrpc++.so.1.48, and protobuf provides libprotobuf.so.32. This prevents fully updating the system as grpc and protobuf can't be updated because of the versioned dependency of murmur.
EDIT: This has been solved with the murmur package being updated to version 1.4.230-13
			
		
