Increased connection pool timeout

app/src/main/java/eu/faircode/email/EmailService.java

@@ -132,7 +132,7 @@ public class EmailService implements AutoCloseable {
     private final static int SEARCH_TIMEOUT = 90 * 1000; // milliseconds
     private final static int FETCH_SIZE = 1024 * 1024; // bytes, default 16K
     private final static int POOL_SIZE = 1; // connections
-    private final static int POOL_TIMEOUT = 45 * 1000; // milliseconds, default 45 sec
+    private final static int POOL_TIMEOUT = 60 * 1000; // milliseconds, default 45 sec
 
     private final static int TCP_KEEP_ALIVE_INTERVAL = 9 * 60; // seconds