mumble from openSUSE:Backports:SLE-15:Update project

Paketit standard:

mumble-1.2.19-bp150.3.3.1.aarch64.rpm mumble-1.2.19-bp150.3.3.1.ppc64le.rpm mumble-1.2.19-bp150.3.3.1.s390x.rpm mumble-1.2.19-bp150.3.3.1.src.rpm mumble-1.2.19-bp150.3.3.1.x86_64.rpm mumble-1.3.0-bp150.3.6.1.aarch64.rpm mumble-1.3.0-bp150.3.6.1.ppc64le.rpm mumble-1.3.0-bp150.3.6.1.s390x.rpm mumble-1.3.0-bp150.3.6.1.src.rpm mumble-1.3.0-bp150.3.6.1.x86_64.rpm