(maint) Add module caching to GHA. Thank's Chrissy!

Author: steviecoaster

.github/workflows/build.yml

@@ -19,6 +19,7 @@ jobs:
       ChocoApiKey: ${{ secrets.ChocoApiKey }}
 
     steps:
+      - uses: AutoModality/action-clean@v1
       - uses: actions/checkout@v2
 
       - name: GitVersion
@@ -28,6 +29,11 @@ jobs:
       - name: Install-RequiredModules
         uses: PoshCode/Actions/install-requiredmodules@v1
 
+      - name: Install and cache PowerShell modules
+        uses: potatoqualitee/psmodulecache@v4
+        with:
+          modules-to-cache: PlatyPS:0.14.0
+
       - name: Build Module
         run: .\build.ps1 -Build -SemVer "${{ steps.gitversion.outputs.LegacySemVerPadded }}"
         shell: pwsh