build(deps): bump openapitools/openapi-diff in /scripts

Bumps openapitools/openapi-diff from 2.1.2 to 2.1.3.

---
updated-dependencies:
- dependency-name: openapitools/openapi-diff
  dependency-version: 2.1.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

scripts/docker-compose.yml

@@ -1,7 +1,7 @@
 ---
 services:
   diff:
-    image: docker.io/openapitools/openapi-diff:2.1.2
+    image: docker.io/openapitools/openapi-diff:2.1.3
     restart: never
     volumes:
       - ../:/local