ci: fix cache status step shell from pwsh to powershell for gitea-act runner

.gitea/workflows/ci.yml

@@ -43,7 +43,7 @@ jobs:
 
       - name: Cache status
         if: always()
-        shell: pwsh
+        shell: powershell
         run: |
           Write-Host "NuGet cache hit: ${{ steps.nuget-cache.outputs.cache-hit }}"
 
@@ -87,7 +87,7 @@ jobs:
 
       - name: Cache status
         if: always()
-        shell: pwsh
+        shell: powershell
         run: |
           Write-Host "NuGet cache hit: ${{ steps.nuget-cache.outputs.cache-hit }}"
 
@@ -140,7 +140,7 @@ jobs:
 
       - name: Cache status
         if: always()
-        shell: pwsh
+        shell: powershell
         run: |
           Write-Host "NuGet cache hit: ${{ steps.nuget-cache.outputs.cache-hit }}"