Add change note

tamasvajk · tamasvajk · commit 714e1dc6868b · 2021-03-02T15:08:07.000+01:00
diff --git a/csharp/change-notes/2021-03-02-dotnet5.md b/csharp/change-notes/2021-03-02-dotnet5.md
@@ -0,0 +1,2 @@
+lgtm,codescanning
+* The extractor has been updated to use dotnet 5 dependencies.

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	`+lgtm,codescanning`
	`2`	`+* The extractor has been updated to use dotnet 5 dependencies.`