Fix broken ci pipeline

Force clean up of the virtual env before update and use python3.10
everywhere

.gitlab-ci.yml

-image: python:3.9-buster
+image: python:3.10-buster
 
 variables:
   PIP_CACHE_DIR: "$CI_PROJECT_DIR/.cache/pip"
@@ -15,15 +15,16 @@ stages:
 update:
   before_script:
     - python -V
-  image: python:3.9-buster
+  image: python:3.10-buster
   stage: venv update
   script:
+    - make clean
     - make install
 
 backend lint:
   before_script:
     - python -V
-  image: python:3.9-buster
+  image: python:3.10-buster
   stage: tests and linting
   script:
     - make lint
@@ -31,7 +32,7 @@ backend lint:
 backend test:
   before_script:
     - python -V
-  image: python:3.9-buster
+  image: python:3.10-buster
   stage: tests and linting
   script:
     - make test
@@ -42,7 +43,7 @@ backend test:
 backend build:
   before_script:
     - python -V
-  image: python:3.9-buster
+  image: python:3.10-buster
   stage: tests and linting
   script:
     - pip install poetry
@@ -56,8 +57,7 @@ frontend test:
     - npm install -g npm@latest
     - npm ci
     - npm run coverage:ci
-  coverage:
-    '/All files[^|]*\|[^|]*\s+([\d\.]+)/'
+  coverage: '/All files[^|]*\|[^|]*\s+([\d\.]+)/'
 
 frontend lint:
   image: node:16-alpine
@@ -75,5 +75,5 @@ frontend build:
     - cd frontend
     - npm install -g npm@latest
     - NODE_ENV=production
-    - npm ci 
+    - npm ci
     - npm run build:no-env