Gitpod refactoring (#20664)

.gitpod.Dockerfile

@@ -1,3 +1,3 @@
-FROM gitpod/workspace-full
+FROM gitpod/workspace-python-3.11
 
 USER gitpod

.gitpod.yml

@@ -1,11 +1,9 @@
 tasks:
-  - command: pip3 install -U platformio && platformio run -e tasmota
+  - command: pip install -U platformio && pip install --upgrade pip && platformio run -t clean -e tasmota
 
 image:
   file: .gitpod.Dockerfile
 
 vscode:
   extensions:
-    - Atishay-Jain.All-Autocomplete
-    - esbenp.prettier-vscode
     - shardulm94.trailing-spaces