Merge pull request #11430 from umbraco/v9/hotfix/11389-use-path.gettemppath

Use Path.GetTempPath instead of %temp% environment variable.

Author: Zeegaan

src/Umbraco.Web.Common/AspNetCore/AspNetCoreHostingEnvironment.cs

@@ -115,7 +115,7 @@ public string LocalTempPath
                         // hopefully it gets a new Guid or new application id?
                         string hashString = SiteName + "::" + ApplicationId;
                         string hash = hashString.GenerateHash();
-                        string siteTemp = Path.Combine(Environment.ExpandEnvironmentVariables("%temp%"), "UmbracoData", hash);
+                        string siteTemp = Path.Combine(Path.GetTempPath(), "UmbracoData", hash);
 
                         return _localTempPath = siteTemp;