Increase lock wait timeout for qemu_user setup script

[Porges]

Address this error when running the setup script:

sudo apt-get install -y qemu-user g++-aarch64-linux-gnu libasan5-arm64-cross
E: Could not get lock /var/lib/dpkg/lock-frontend. It is held by process 9364 (dpkg)
E: Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), is another process using it?

Solution from here; this option is present in Ubuntu 20.04 and later, which we use.

[codecov-commenter]

Codecov Report

Merging #3114 (f12291c) into main (2f478d6) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #3114   +/-   ##
=======================================
  Coverage   31.61%   31.61%           
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  Files         308      308           
  Lines       36535    36535           
=======================================
  Hits        11552    11552           
  Misses      24983    24983