Use cassette replay for Clerk driver test

Align the Clerk driver tests with the rest of the access-review\ndriver suite by exercising VCR cassette replay instead of a\ncustom transport stub.\n\nThis keeps test coverage consistent with existing providers and\nensures request matching behavior is validated against a checked-in\nfixture.

Signed-off-by: Cursor Agent <cursoragent@cursor.com>

Co-authored-by: Bryan FRIMIN <bryan@frimin.fr>

pkg/accessreview/drivers/testdata/clerk.yaml

@@ -0,0 +1,37 @@
+---
+version: 2
+interactions:
+    - id: 0
+      request:
+        proto: HTTP/1.1
+        proto_major: 1
+        proto_minor: 1
+        content_length: 0
+        host: api.clerk.com
+        form:
+            limit:
+                - "100"
+            offset:
+                - "0"
+        headers:
+            Accept:
+                - application/json
+        url: https://api.clerk.com/v1/users?limit=100&offset=0
+        method: GET
+      response:
+        proto: HTTP/2.0
+        proto_major: 2
+        proto_minor: 0
+        content_length: -1
+        uncompressed: true
+        body: '{"data":[{"id":"usr_000000000000000000000001","primary_email_address_id":"eml_primary_1","username":null,"first_name":"Jane","last_name":"Doe","password_enabled":true,"two_factor_enabled":false,"totp_enabled":false,"backup_code_enabled":false,"banned":false,"locked":false,"last_sign_in_at":1748471521000,"created_at":1748342000000,"email_addresses":[{"id":"eml_secondary_1","email_address":"jane+alt@example.com"},{"id":"eml_primary_1","email_address":"jane@example.com"}]},{"id":"usr_000000000000000000000002","primary_email_address_id":null,"username":"developer-user","first_name":null,"last_name":null,"password_enabled":false,"two_factor_enabled":true,"totp_enabled":false,"backup_code_enabled":false,"banned":false,"locked":false,"last_sign_in_at":null,"created_at":1748343000000,"email_addresses":[{"id":"eml_2","email_address":"developer@example.com"}]},{"id":"usr_000000000000000000000003","primary_email_address_id":"eml_primary_3","username":null,"first_name":null,"last_name":null,"password_enabled":false,"two_factor_enabled":false,"totp_enabled":false,"backup_code_enabled":false,"banned":true,"locked":false,"last_sign_in_at":null,"created_at":1748344000000,"email_addresses":[{"id":"eml_primary_3","email_address":"blocked@example.com"}]}],"total_count":3}'
+        headers:
+            Content-Type:
+                - application/json
+            Date:
+                - Fri, 29 May 2026 03:30:00 GMT
+            Server:
+                - cloudflare
+        status: 200 OK
+        code: 200
+        duration: 120.5ms