[SelfDiagnostics] Update config refresh period to 10 seconds (#1523)

Co-authored-by: Cijo Thomas <cithomas@microsoft.com>

src/OpenTelemetry/Internal/SelfDiagnosticsConfigRefresher.cs

@@ -33,7 +33,7 @@ namespace OpenTelemetry.Internal
     /// </summary>
     internal class SelfDiagnosticsConfigRefresher : IDisposable
     {
-        private const int ConfigurationUpdatePeriodMilliSeconds = 3000;
+        private const int ConfigurationUpdatePeriodMilliSeconds = 10000;
 
         private readonly CancellationTokenSource cancellationTokenSource;
         private readonly Task worker;