Automatically close obsolete vulnerability issues

Part of: https://gitlab.com/dependabot-gitlab/dependabot/-/issues/204

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Allure report

allure-report-publisher generated test report!

rspec: ✅ test report for 10da8a2b

+------------------------------------------------------------------+
|                        behaviors summary                         |
+-------------+--------+--------+---------+-------+-------+--------+
|             | passed | failed | skipped | flaky | total | result |
+-------------+--------+--------+---------+-------+-------+--------+
| services    | 168    | 0      | 0       | 0     | 168   | ✅     |
| controllers | 24     | 0      | 0       | 0     | 24    | ✅     |
| jobs        | 14     | 0      | 0       | 0     | 14    | ✅     |
| system      | 10     | 0      | 0       | 0     | 10    | ✅     |
| models      | 3      | 0      | 0       | 0     | 3     | ✅     |
| tasks       | 8      | 0      | 0       | 0     | 8     | ✅     |
+-------------+--------+--------+---------+-------+-------+--------+
| Total       | 227    | 0      | 0       | 0     | 227   | ✅     |
+-------------+--------+--------+---------+-------+-------+--------+