ci: removed snyk files (#7521)

removed snyk files

.snyk

-# Snyk (https://snyk.io) policy file, patches or ignores known vulnerabilities.
-version: v1.25.0
-# ignores vulnerabilities until expiry date; change duration by modifying expiry date
-ignore:
-  SNYK-JS-OPENZEPPELINCONTRACTS-2964946:
-    - '*':
-        reason: None Given
-        expires: 2099-01-01T00:00:00.000Z
-        created: 2022-12-08T16:25:57.347Z
-  SNYK-JS-OPENZEPPELINCONTRACTS-2958047:
-    - '*':
-        reason: None Given
-        expires: 2099-01-01T00:00:00.000Z
-        created: 2022-12-08T16:26:09.720Z
-  SNYK-JS-OPENZEPPELINCONTRACTS-2958050:
-    - '*':
-        reason: None Given
-        expires: 2099-01-01T00:00:00.000Z
-        created: 2022-12-08T16:26:17.702Z
-  SNYK-JS-OPENZEPPELINCONTRACTS-2965580:
-    - '*':
-        reason: None Given
-        expires: 2099-01-01T00:00:00.000Z
-        created: 2022-12-08T16:26:34.283Z
-patch: {}