Remove i386 and update bump version script

esphome-dev/build.json

@@ -1,10 +1,9 @@
 {
   "args": {},
   "build_from": {
-    "aarch64": "esphome/esphome-hassio-base-aarch64:2.3.3",
-    "amd64": "esphome/esphome-hassio-base-amd64:2.3.3",
-    "armv7": "esphome/esphome-hassio-base-armv7:2.3.3",
-    "i386": "esphome/esphome-hassio-base-i386:2.3.3"
+    "aarch64": "esphome/esphome-hassio-base-aarch64:2.3.4",
+    "amd64": "esphome/esphome-hassio-base-amd64:2.3.4",
+    "armv7": "esphome/esphome-hassio-base-armv7:2.3.4"
   },
   "squash": false
 }

esphome-dev/config.json

@@ -1,7 +1,6 @@
 {
   "arch": [
     "amd64",
-    "i386",
     "armv7",
     "aarch64"
   ],
@@ -28,7 +27,7 @@
     "6052/tcp": null
   },
   "ports_description": {
-    "6052/tcp": "Web interface (Not required for Hass.io Ingress)"
+    "6052/tcp": "Web interface (Not required for Home Assistant Ingress)"
   },
   "schema": {
     "certfile": "str?",
@@ -41,6 +40,7 @@
     "streamer_mode": "bool?"
   },
   "slug": "esphome-dev",
+  "stage": "experimental",
   "startup": "application",
   "url": "https://next.esphome.io/",
   "version": "dev",