Minor EspSoftwareSerial release 6.11.0 (#7802)

dok-net · web-flow · commit 229903a24d50 · 2020-12-31T10:54:12.000-08:00
* Minor EspSoftwareSerial release 6.11.0: more GPIOs for ESP32

* EspSoftwareSerial: Fix unused parameter warning.
diff --git a/libraries/SoftwareSerial b/libraries/SoftwareSerial
@@ -1 +1 @@
-Subproject commit 7389070e2223297c46ba7ae915e4a8309f66cb7e
+Subproject commit 67bb88db895851801099ae9b1121cc6fedf7736c
