Update ghcr.io/hassio-addons/base Docker tag to v18.0.3 (#469)

* update python and pip to compatible versions

* Update ghcr.io/hassio-addons/base Docker tag to v18.0.3

* add-on: remove armhf and armv7 support

---------

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Stefan Allius <stefan.allius@t-online.de>

ha_addons/ha_addon/Dockerfile

@@ -13,7 +13,7 @@
 # 1 Build Base Image #
 ######################
 
-ARG BUILD_FROM="ghcr.io/hassio-addons/base:18.0.0"
+ARG BUILD_FROM="ghcr.io/hassio-addons/base:18.0.3"
 # hadolint ignore=DL3006
 FROM $BUILD_FROM AS base
 

ha_addons/templates/config.jinja

@@ -10,8 +10,6 @@ init: false
 arch:
   - aarch64
   - amd64
-  - armhf
-  - armv7
 startup: services
 homeassistant_api: true
 map: