Use Ubuntu 22.04

[RussKie]

An attempt to see if 22.04 suffers from the same symptoms as described in #4078

Microsoft Reviewers: Open in CodeFlow

[RussKie]

This didn't seem to make any difference

The internal CI is still failing:

VSTest : error : Tests failed: /mnt/vss/_work/1/s/artifacts/TestResults/Release/Microsoft.Extensions.Diagnostics.ResourceMonitoring.Tests_net8.0_x64.html [net8.0|x64] [/mnt/vss/_work/1/s/test/Libraries/Microsoft.Extensions.Diagnostics.ResourceMonitoring.Tests/Microsoft.Extensions.Diagnostics.ResourceMonitoring.Tests.csproj]
##[error]VSTest(0,0): error : (NETCORE_ENGINEERING_TELEMETRY=Build) Tests failed: /mnt/vss/_work/1/s/artifacts/TestResults/Release/Microsoft.Extensions.Diagnostics.ResourceMonitoring.Tests_net8.0_x64.html [net8.0|x64]

[RussKie]

Same for https://dev.azure.com/dnceng-public/public/_build/results?buildId=309307&view=results and https://dev.azure.com/dnceng-public/public/_build/results?buildId=309316&view=results. Microsoft.Extensions.Diagnostics.ResourceMonitoring.Tests is featured in both.