Always use '.' as decimal separator (getsentry#2445)

Author: jnyrup

src/Sentry/Internal/Extensions/JsonExtensions.cs

@@ -180,7 +180,7 @@ public static void Deconstruct(this JsonProperty jsonProperty, out string name,
 
         // Otherwise, let's get the value as a string and parse it ourselves.
         // Note that we already know this will succeed due to JsonValueKind.Number
-        return double.Parse(json.ToString()!);
+        return double.Parse(json.ToString()!, CultureInfo.InvariantCulture);
     }
 
     public static long? GetAddressAsLong(this JsonElement json)

src/Sentry/Internal/Http/RetryAfterHandler.cs

@@ -85,7 +85,7 @@ private DateTimeOffset GetRetryAfterTimestamp(HttpResponseMessage response)
         // Sentry was sending floating point numbers which are not handled by RetryConditionHeaderValue
         // To be compatible with older versions of sentry on premise: https://github.com/getsentry/sentry/issues/7919
         if (response.Headers.TryGetValues("Retry-After", out var values)
-            && double.TryParse(values.FirstOrDefault(), out var retryAfterSeconds))
+            && double.TryParse(values.FirstOrDefault(), NumberStyles.Float | NumberStyles.AllowThousands, CultureInfo.InvariantCulture, out var retryAfterSeconds))
         {
             return _clock.GetUtcNow().AddTicks((long)(retryAfterSeconds * TimeSpan.TicksPerSecond));
         }