ansible,jenkins: install and select gcc-10 on debian10

[targos]

Refs: #3317

[targos]

failed: [test-softlayer-debian10-x64-1] (item=gcc-8,g++-8,gcc-10,g++-10,ccache,git,curl,libfontconfig1,apt-transport-https,ca-certificates,sudo,python3-pip) => {"ansible_loop_var": "package", "changed": false, "msg": "No package matching 'gcc-10' is available", "package": "gcc-8,g++-8,gcc-10,g++-10,ccache,git,curl,libfontconfig1,apt-transport-https,ca-certificates,sudo,python3-pip"}

What am I missing?

https://packages.debian.org/bullseye/gcc-10 This is debian 11

[targos]

idk, somehow I thought buster had gcc-10, but it's not the case.