CI: Don't compress already-compressed artifacts

.github/workflows/linux-appimage-build.yml

@@ -82,3 +82,5 @@ jobs:
       with:
         name: "${{ matrix.artifact }}"
         path: "${{ matrix.asset }}"
+        compression-level: 0
+        if-no-files-found: error

.github/workflows/linux-cross-appimage-build.yml

@@ -98,3 +98,5 @@ jobs:
       with:
         name: "linux-${{ matrix.arch }}-appimage"
         path: "DuckStation-*.AppImage"
+        compression-level: 0
+        if-no-files-found: error

.github/workflows/macos-build.yml

@@ -72,3 +72,5 @@ jobs:
       with:
         name: "macos"
         path: "build/duckstation-mac-release.zip"
+        compression-level: 0
+        if-no-files-found: error

.github/workflows/windows-build.yml

@@ -145,3 +145,5 @@ jobs:
       with:
         name: "windows-${{ matrix.arch }}"
         path: "duckstation-windows-${{ matrix.arch }}-*.*"
+        compression-level: 0
+        if-no-files-found: error