Update roc-validator requirement from ~=0.6.5 to ~=0.4.6

Updates the requirements on [roc-validator](https://github.com/crs4/rocrate-validator) to permit the latest version.
- [Release notes](https://github.com/crs4/rocrate-validator/releases)
- [Commits](crs4/rocrate-validator@0.6.5...0.4.6)

---
updated-dependencies:
- dependency-name: roc-validator
  dependency-version: 0.4.6
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

requirements.testing.txt

@@ -6,5 +6,5 @@ Werkzeug~=3.0.4
 redis~=5.2.0
 python-dotenv~=1.0.1
 apiflask~=2.4.0
-roc-validator~=0.6.5
+roc-validator~=0.4.6
 pytest~=8.4.1

requirements.txt

@@ -6,4 +6,4 @@ Werkzeug~=3.0.4
 redis~=5.2.0
 python-dotenv~=1.0.1
 apiflask~=2.4.0
-roc-validator~=0.6.5
+roc-validator~=0.4.6