bump openapi-generator (#40)

Author: fopina

.github/workflows/publish-main.yml

@@ -4,6 +4,7 @@ on:
   push:
     tags:
       - '[0-9]+.[0-9]+.[0-9]+'
+      - '[0-9]+.[0-9]+.[0-9]+.post[0-9]+'
 
 jobs:
   test_and_publish:

.openapi-generator/VERSION

@@ -1 +1 @@
-7.13.0
+7.20.0

CONTRIBUTING.md

@@ -12,4 +12,20 @@ Use `make lint` to make sure lint check passes before pushing.
 
 ## Guidelines
 
+### Update openapi-generator version
+
+* Run `make templates`
+* Generate diff from `support/api_generation/custom_templates` with `support/api_generation/templates.spec`
+  * Create new temporary branch
+  * `make templates` / `rm -fr support/api_generation/custom_templates/*` / `mv support/api_generation/templates.spec/* support/api_generation/custom_templates/`
+  * Push and create PR (to be closed without merge) - use it as reference for changes
+  * Back to upgrade branch
+* Update version in `support/api_generation/openapi-generator-cli.sh`
+* Run `make templates` again
+* Update `support/api_generation/custom_templates` with the new templates considering the changes from first step
+  * `rm -fr support/api_generation/custom_templates/*` / `mv support/api_generation/templates.spec/* support/api_generation/custom_templates/`
+  * Re-apply changes using the temporary PR created before
+
+### Update Dojo OpenAPI schema
+
 ...