Update .netconfig to skip incoming SL.sln

Author: kzu

.netconfig

@@ -1,11 +1,12 @@
 [file]
 	url = https://github.com/devlooped/oss
 	url = https://github.com/clarius/pages
-
 [file ".netconfig"]
 	url = https://github.com/devlooped/oss/blob/main/.netconfig
 	skip
-
+[file "SponsorLink.sln"]
+	url = https://github.com/devlooped/oss/blob/main/SponsorLink.sln
+	skip
 [file "readme.md"]
 	url = https://github.com/devlooped/oss/blob/main/readme.md
 	skip