Merge the microbuild branch from https://github.com/aarnott/Library.Template

Specifically, this merges [abb8f74 from that repo](AArnott/Library.Template@abb8f74).

Author: AArnott

.github/workflows/copilot-setup-steps.yml

@@ -26,7 +26,7 @@ jobs:
     # You can define any steps you want, and they will run before the agent starts.
     # If you do not check out your code, Copilot will do this for you.
     steps:
-    - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
+    - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
       with:
         fetch-depth: 0 # avoid shallow clone so nbgv can do its work.
     - name: ⚙ Install prerequisites

.github/workflows/docs.yml

@@ -24,7 +24,7 @@ jobs:
       url: ${{ steps.deployment.outputs.page_url }}
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
+    - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
       with:
         fetch-depth: 0 # avoid shallow clone so nbgv can do its work.
     - name: ⚙ Install prerequisites
@@ -40,4 +40,4 @@ jobs:
 
     - name: Deploy to GitHub Pages
       id: deployment
-      uses: actions/deploy-pages@d6db90164ac5ed86f2b6aed7e0febac5b3c0c03e # v4
+      uses: actions/deploy-pages@d6db90164ac5ed86f2b6aed7e0febac5b3c0c03e # v4.0.5

.github/workflows/docs_validate.yml

@@ -13,7 +13,7 @@ jobs:
     name: 📚 Doc validation
     runs-on: ubuntu-24.04
     steps:
-    - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
+    - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
       with:
         fetch-depth: 0 # avoid shallow clone so nbgv can do its work.
     - name: 🔗 Markup Link Checker (mlc)

.github/workflows/libtemplate-update.yml

@@ -17,7 +17,7 @@ jobs:
       contents: write
       pull-requests: write
     steps:
-    - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
+    - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
       with:
         fetch-depth: 0 # avoid shallow clone so nbgv can do its work.
 

Directory.Packages.props

@@ -15,7 +15,7 @@
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
     <PackageVersion Include="Microsoft.VisualStudio.Internal.MicroBuild.NonShipping" Version="$(MicroBuildVersion)" />
     <PackageVersion Include="xunit.runner.visualstudio" Version="3.1.5" />
-    <PackageVersion Include="xunit.v3" Version="3.2.0" />
+    <PackageVersion Include="xunit.v3" Version="3.2.1" />
   </ItemGroup>
   <ItemGroup>
     <!-- Put repo-specific GlobalPackageReference items in this group. -->

azure-pipelines/OptProf.yml

@@ -38,7 +38,7 @@ extends:
     settings:
       networkIsolationPolicy: Permissive,CFSClean
     sdl:
-      sourceAnalysisPool: VSEngSS-MicroBuild2022-1ES
+      sourceAnalysisPool: VSEng-MicroBuildVSStable
 
     stages:
     - stage: archive