Enforce -maxcpucount switch on MSBuild commands in CI

Author: Lamparter

.github/workflows/ci.yml

@@ -375,6 +375,7 @@ jobs:
       - name: Build
         run: |
           msbuild $env:THIS_PROJECT_PATH `
+            -maxcpucount `
             -t:Build `
             -p:Platform="Any CPU" `
             -p:Configuration=$env:CONFIGURATION `
@@ -415,13 +416,15 @@ jobs:
       - name: Restore
         run: |
           msbuild $env:SOLUTION_PATH `
+            -maxcpucount `
             -t:Restore `
             -p:Platform="Any CPU" `
             -p:Configuration=$env:CONFIGURATION
 
       - name: Build
         run: |
           msbuild $env:THIS_PROJECT_PATH `
+            -maxcpucount `
             -t:Build `
             -p:Platform="Any CPU" `
             -p:Configuration=$env:CONFIGURATION `