Update CI to run on Ubuntu Latest

[hymm]

Recently the ubuntu image in CI updated from 20.04 to 22.04. This broke the run-examples and run-examples-on-wasm actions. As a temporary fix, the images used for these actions was changed to use ubuntu-20.04 instead of ubuntu-latest. It is likely that the packages that need to be installed to get these actions to run correctly has changed. Someone should figure out the new requirements and switch ci back to ubuntu-latest.

Info

Error for run-examples action:

Run for example in .github/example-run/*.ron; do
running alien_cake_addict - Thu Dec 1 00:19:11 UTC 2022
xvfb-run: error: Xvfb failed to start

real	0m0.6[18](https://github.com/bevyengine/bevy/actions/runs/3588188694/jobs/6039310786#step:8:19)s
user	0m0.021s
sys	0m0.045s
Error: Process completed with exit code 1.

Error for run-examples-on-wasm:

Run cd .github/start-wasm-example

added 3 packages, and audited 4 packages in 5s

found 0 vulnerabilities
Installing dependencies...
Switching to root user to install dependencies...
Hit:1 https://packages.microsoft.com/ubuntu/22.04/prod jammy InRelease
Hit:2 http://azure.archive.ubuntu.com/ubuntu jammy InRelease
Hit:3 http://azure.archive.ubuntu.com/ubuntu jammy-updates InRelease
Hit:4 http://azure.archive.ubuntu.com/ubuntu jammy-backports InRelease
Hit:5 http://azure.archive.ubuntu.com/ubuntu jammy-security InRelease
Hit:6 https://ppa.launchpadcontent.net/oibaf/graphics-drivers/ubuntu jammy InRelease
Hit:7 https://ppa.launchpadcontent.net/ubuntu-toolchain-r/test/ubuntu jammy InRelease
Reading package lists...
Reading package lists...
Building dependency tree...
Reading state information...
Package ttf-ubuntu-font-family is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

Package ttf-unifont is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
However the following packages replace it:
  fonts-unifont

Package libicu66 is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'ttf-unifont' has no installation candidate
E: Package 'ttf-ubuntu-font-family' has no installation candidate
E: Unable to locate package libenchant1c2a
E: Package 'libicu66' has no installation candidate
E: Unable to locate package libvpx6
E: Unable to locate package libwebp6
Failed to install browsers
Error: Installation process exited with code: [10](https://github.com/bevyengine/bevy/actions/runs/3588188694/jobs/6039310786#step:7:11)0
Error: Process completed with exit code 1.

[rparrett]

For the run-examples part:

Here's some more verbose error output: xvfb.log

I believe this is related: https://gitlab.freedesktop.org/mesa/mesa/-/issues/7819

Adding

env:
  LIBGL_ALWAYS_SOFTWARE: true

To the workflow seems to be fix the issue.

AdapterInfo { name: "llvmpipe (LLVM 15.0.5, 256 bits)", vendor: 65541, device: 0, device_type: Cpu, driver: "llvmpipe", driver_info: "Mesa 23.0.0-devel (git-77ecf91 2022-12-03 jammy-oibaf-ppa) (LLVM 15.0.5)", backend: Vulkan }

For the run-examples-on-wasm, it looks like we need to upgrade to playwright >1.23. microsoft/playwright#13738

[oliviacrain]

Will work on the playwright upgrade for run-examples-on-wasm!

[oliviacrain]

Actually, I'll take both- run-examples should be fixed on 22.04 now. The PPA we pull mesa components from just released a version with the upstream fix.