refactor: do a major refactor of gitops validation

In order to prepare to update it to allow for easy extension with
additional checks.

On the way, we also enable some caching to speed up the gitops
validation when the same chart version is used across several services.

Author: Yann Rouillard

.pre-commit-hooks.yaml

@@ -34,6 +34,15 @@
     stages: [commit]
     always_run: true
     pass_filenames: false
+    additional_dependencies:
+      - jsonschema==4.19.0
+      - requests==2.31.0
+      - ruamel-yaml==0.17.32
+      - urllib3==1.26.15
+      - pyyaml==6.0.1
+      - termcolor==2.4.0
+      - semver==3.0.2
+      
 
 -   id: kafka-check-schemas
     name: Check if local Kafka Schemas are up to date with code