Upgrading python3 on mars

 apt list --installed | grep python3.9

WARNING: apt does not have a stable CLI interface. Use with caution in scripts.

libpython3.9/bionic,now 3.9.12-1+bionic2 amd64 [installed,automatic]
libpython3.9-dev/bionic,now 3.9.12-1+bionic2 amd64 [installed,automatic]
libpython3.9-minimal/now 3.9.12-1+bionic1 amd64 [installed,upgradable to: 3.9.12-1+bionic2]
libpython3.9-stdlib/now 3.9.12-1+bionic1 amd64 [installed,upgradable to: 3.9.12-1+bionic2]
python3.9/bionic,now 3.9.12-1+bionic2 amd64 [installed]
python3.9-dev/bionic,now 3.9.12-1+bionic2 amd64 [installed]
python3.9-minimal/bionic,now 3.9.12-1+bionic2 amd64 [installed,automatic]