[6.x] Prevent logging git dependabot errors

[aerni]

The Git integration is throwing errors when pushing changes to a repo with open dependabot warnings. This PR ignores these errors and follows the same pattern as #10332.

Process Class: Git Command: 'git' 'push' '--porcelain' Error: remote: remote: GitHub found 45 vulnerabilities on user/repo's default branch (1 critical, 17 high, 24 moderate, 3 low). To find out more, visit: remote: https://github.com/user/repo/security/dependabot remote: