Upgraded to .NET 10 (#1147)

.github/workflows/build-and-release.yml

@@ -339,7 +339,7 @@ jobs:
             -y \
             flathub \
             "org.freedesktop.Sdk//${FLATPAK_FREEDESKTOP_VERSION}" \
-            "org.freedesktop.Sdk.Extension.dotnet9//${FLATPAK_FREEDESKTOP_VERSION}"
+            "org.freedesktop.Sdk.Extension.dotnet10//${FLATPAK_FREEDESKTOP_VERSION}"
 
           tools_dir="$RUNNER_TEMP/flatpak-sync-tools"
           mkdir -p "$tools_dir"
@@ -793,7 +793,7 @@ jobs:
 
       - name: Read the toolchain versions from the metadata
         run: |
-          # The .NET SDK version. The format is '9.0.205 (commit 3e1383b780)',
+          # The .NET SDK version. The format is '10.0.114 (commit 0427b9abbe)',
           # so we extract the version number alone:
           dotnet_sdk_version=$(sed -n '4p' metadata.txt | sed 's/[^0-9.]*\([0-9.]*\).*/\1/')