Update build-kernel-a14-5.15.yml

.github/workflows/build-kernel-a14-5.15.yml

@@ -52,6 +52,7 @@ jobs:
         with:
           root-reserve-mb: 8192
           temp-reserve-mb: 2048
+          swap-size-mb: 8192
           remove-dotnet: 'true'
           remove-android: 'true'
           remove-haskell: 'true'