Merge latest Library.Template

[AArnott]

• Add comment about multi-targeting projects
• Update PublishCodeCoverageResults task to v2
• Bump Nerdbank.GitVersioning from 3.6.139 to 3.6.141 (Bump Microsoft.Net.Compilers.Toolset from 3.11.0 to 4.0.1 #280)
• Bump nbgv from 3.6.139 to 3.6.141 (Bump Microsoft.VisualStudio.Threading.Analyzers from 17.0.63 to 17.0.64 #279)
• Bump dotnet-coverage from 17.11.3 to 17.11.5 (Bump System.Composition from 5.0.1 to 6.0.0 #278)
• Bump .NET SDK to 8.0.400
• Post code coverage diff comments for AzDO PRs
• Fix 1ES PT compliance of vs-validation pipeline
• Speed up validation insertions
• Bump MicroBuild to 2.0.165
• Bump Microsoft.NET.Test.Sdk to 17.11
• Bump powershell from 7.4.4 to 7.4.5 (Fix activation of open generic exports with multiple constructors #282)
• Change OptProf to not require real-signing
• Bump Nerdbank.GitVersioning from 3.6.141 to 3.6.143 (Make composition iterative instead of recursive #283)
• Bump nbgv from 3.6.141 to 3.6.143 (Promote all APIs that shipped in 17.0 to PublicAPI.Shipped.txt #284)
• Bump dotnet-coverage from 17.11.5 to 17.12.2 (Build SBOM manifest as part of build #285)
• Bump dotnet-coverage from 17.12.2 to 17.12.3 (Improve error messages around part discovery #288)
• Bump Microsoft.NET.Test.Sdk from 17.11.0 to 17.11.1 (Add analyzer to detect when a class has more than one ImportingConstructor attribute #287)
• Stop pushing test-signed packages from CI
• Bump dotnet-coverage from 17.12.3 to 17.12.4 (Bump System.Threading.Tasks.Dataflow from 5.0.0 to 6.0.0 #289)
• Bump xunit from 2.9.0 to 2.9.1 (A few fixes to [OnImportsSatisfied] use #290)
• Bump dotnet-coverage from 17.12.4 to 17.12.5 (LEGO: Pull request from juno/hb_dd8dbf7b-874d-49f2-9313-853dd6e34f6c_20220121180227974 to main #292)
• Bump xunit from 2.9.1 to 2.9.2 (Fix discovery of V2 private imports on base classes #291)
• Install the SBOM tool from the MicroBuildToolset
• Fix vs-validation pipeline when no job in prepare-insertion-stages.yml is enabled
• Add support for VSIX and VSTS drop
• Build on ubuntu 22 in cloud builds
• Add AzDO pipeline to help keep repos up-to-date
• Apply 1ES PT to libtemplate-update pipeline
• Bump .NET SDK to 8.0.402
• Fix linux agent on AzDO
• Update build agent to macos-14
• Add missing LocLanguages variable
• Fix build break from missing intermediate directory
• Notice errors from invocation of git rev-parse HEAD
• Ignore Rider cache files
• Use a template output to publish the symbol-legacy artifact
• Bump dotnet-coverage from 17.12.5 to 17.12.6 (Fix CI build failures #297)
• Do NOT fail a pipeline build due to nuget vulnerabilities
• Avoid running tests on mono for test project
• Bump nbgv from 3.6.143 to 3.6.146 (Bump Microsoft.CodeAnalysis.CSharp.Workspaces from 4.0.1 to 4.1.0 #300)
• Bump Nerdbank.GitVersioning from 3.6.143 to 3.6.146 (vs-mef with custom AssemblyLoadContext #299)
• Bump powershell from 7.4.5 to 7.4.6 (Bump Microsoft.CodeAnalysis.VisualBasic.CodeFix.Testing.XUnit from 1.1.0 to 1.1.1 #301)
• Touch-up optprof pipelines
• Add github workflow to keep current with Library.Template