--publish(-native) proxy error messaging

`cml --publish-native --log debug comment create report.md`

```yaml
{"level":"debug","message":"Send analytics failed: Cannot read properties of undefined (reading 'startsWith')"}
{"level":"error","message":"cannotconnect","stack":"Error: cannotconnect\n at Gitlab.request (/usr/lib/node_modules/@dvcorg/cml/src/drivers/gitlab.js:489:38)\n at processTicksAndRejections (node:internal/process/task_queues:96:5)\n at async /usr/lib/node_modules/@dvcorg/cml/src/drivers/gitlab.js
16\n at async Promise.all (index 0)\n at async Gitlab.repoBase (/usr/lib/node_modules/@dvcorg/cml/src/drivers/gitlab.js:41:27)\n at async Gitlab.projectPath (/usr/lib/node_modules/@dvcorg/cml/src/drivers/gitlab.js:29:22)\n at async Gitlab.upload (/usr/lib/node_modules/@dvcorg/cml/src/drivers/gitlab.js:130:25)\n at async CML.publish (/usr/lib/node_modules/@dvcorg/cml/src/cml.js:369:24)\n at async visitor (/usr/lib/node_modules/@dvcorg/cml/src/cml.js:245:24)\n at async Promise.all (index 0)"}
```