Update arduino-esp32 to fix some network issues

Nothing user-visible or changelog-worthy.

- Fix very rare websocket update stall.
- Increase TCPIP task mbox, loopback queue and TCP MSS.
- Reduce oversized task stacks.
- Reduce WiFi buffers to reduce memory pressure when no PSRAM is available.

software/packages/arduino-esp32#warp-2.3.1_7bcc33fad7e90b136e80ecf36daf84029cbd4510/package.json

@@ -0,0 +1,16 @@
+{
+  "name": "framework-arduinoespressif32",
+  "version": "2.0.15",
+  "description": "Arduino Wiring-based Framework for the Espressif ESP32, ESP32-S and ESP32-C series of SoCs",
+  "keywords": [
+    "framework",
+    "arduino",
+    "espressif",
+    "esp32"
+  ],
+  "license": "LGPL-2.1-or-later",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/espressif/arduino-esp32"
+  }
+}

software/packages/arduino-esp32#warp2-2.3.1_577956dd68b98b78a03ace3f12f2d134fb3127dd/package.json

@@ -0,0 +1,16 @@
+{
+  "name": "framework-arduinoespressif32",
+  "version": "2.0.15",
+  "description": "Arduino Wiring-based Framework for the Espressif ESP32, ESP32-S and ESP32-C series of SoCs",
+  "keywords": [
+    "framework",
+    "arduino",
+    "espressif",
+    "esp32"
+  ],
+  "license": "LGPL-2.1-or-later",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/espressif/arduino-esp32"
+  }
+}

software/packages/config.json

@@ -1,14 +1,14 @@
 [
     {
         "base": "arduino-esp32",
-        "branch": "warp-2.2.2",
-        "commit": "b79a7c1d069c891a1eadf6951f03c1119c3cf4ef",
+        "branch": "warp-2.3.1",
+        "commit": "7bcc33fad7e90b136e80ecf36daf84029cbd4510",
         "url": "https://github.com/Tinkerforge/arduino-esp32"
     },
     {
         "base": "arduino-esp32",
-        "branch": "warp2-2.2.2",
-        "commit": "d74a4d490aac9d67b6b041946a20ea568864ca29",
+        "branch": "warp2-2.3.1",
+        "commit": "577956dd68b98b78a03ace3f12f2d134fb3127dd",
         "url": "https://github.com/Tinkerforge/arduino-esp32"
     }
 ]

software/platformio.ini

@@ -49,7 +49,7 @@ custom_web_build_flags =
 [env:base_esp32]
 board = esp32_brick
 
-platform_packages = platformio/framework-arduinoespressif32 @ symlink://packages/arduino-esp32#warp-2.2.2_b79a7c1d069c891a1eadf6951f03c1119c3cf4ef
+platform_packages = platformio/framework-arduinoespressif32 @ symlink://packages/arduino-esp32#warp-2.3.1_7bcc33fad7e90b136e80ecf36daf84029cbd4510
 
 lib_deps = https://github.com/Tinkerforge/ArduinoJson#4d00ed9efc8841e8aeff938a9f76f73df53eb5a2
            https://github.com/Tinkerforge/strict_variant#warp-2.0.3
@@ -66,7 +66,7 @@ board = esp32_4mb
 [env:base_esp32_ethernet]
 board = esp32_ethernet_brick
 
-platform_packages = platformio/framework-arduinoespressif32 @ symlink://packages/arduino-esp32#warp2-2.2.2_d74a4d490aac9d67b6b041946a20ea568864ca29
+platform_packages = platformio/framework-arduinoespressif32 @ symlink://packages/arduino-esp32#warp2-2.3.1_577956dd68b98b78a03ace3f12f2d134fb3127dd
 
 lib_deps = https://github.com/Tinkerforge/ArduinoJson#4d00ed9efc8841e8aeff938a9f76f73df53eb5a2
            https://github.com/Tinkerforge/strict_variant#warp2-2.0.3