chore(ci): Update 'psmodulecache' to 'main' (#16)

Co-authored-by: Hsiao-nan Cheung <niheaven@gmail.com>

Author: 404NetworkError

.github/workflows/ci.yml

@@ -24,7 +24,7 @@ jobs:
           repository: ScoopInstaller/Scoop
           path: scoop_core
       - name: Init Test Suite
-        uses: potatoqualitee/psmodulecache@v5.1
+        uses: potatoqualitee/psmodulecache@main
         with:
           modules-to-cache: BuildHelpers
           shell: powershell
@@ -48,7 +48,7 @@ jobs:
           repository: ScoopInstaller/Scoop
           path: scoop_core
       - name: Init Test Suite
-        uses: potatoqualitee/psmodulecache@v5.1
+        uses: potatoqualitee/psmodulecache@main
         with:
           modules-to-cache: BuildHelpers
           shell: pwsh