Raise build parallelism for the 44-core CI host [CI]

ci/release-linux.sh

@@ -93,7 +93,7 @@ mkdir -p "$sqlite_cache_root/locks"
   cd "$root/backend"
   bash "$root/ci/with-aot-slot.sh" flock --close --wait 900 "$sqlite_cache_root/locks/$rid.lock" \
     dotnet publish src/MoShiro.Backend \
-      -m:4 -nodeReuse:false -c Release -r "$rid" --self-contained true \
+      -m:8 -nodeReuse:false -c Release -r "$rid" --self-contained true \
       --no-restore \
       -p:DebugType=none -p:DebugSymbols=false \
       -p:PublishAot=true -p:UseAotAnywhere=true -p:SqliteStaticLink=true -p:OpenApiGenerateDocuments=false \