Add lgpl-3.0 as allowed license (#41911)

Author: mthalman

src/SourceBuild/content/test/Microsoft.DotNet.SourceBuild.SmokeTests/LicenseScanTests.cs

@@ -79,6 +79,7 @@ public class LicenseScanTests : TestBase
         "lgpl-2.0-plus", // https://opensource.org/license/lgpl-2-0/
         "lgpl-2.1", // https://opensource.org/license/lgpl-2-1/
         "lgpl-2.1-plus", // https://opensource.org/license/lgpl-2-1/
+        "lgpl-3.0", // https://opensource.org/license/lgpl-3-0/
         "lzma-sdk-9.22", // https://github.com/nexB/scancode-toolkit/blob/develop/src/licensedcode/data/licenses/lzma-sdk-9.22.LICENSE
         "mit", // https://opensource.org/license/mit/
         "mit-addition", // https://github.com/nexB/scancode-toolkit/blob/develop/src/licensedcode/data/licenses/mit-addition.LICENSE