Breaking OSCI: GitHub's latest changes in event data model

GitHub recently introduced changes to some event models that cause the OSCI to break: https://github.blog/changelog/2025-08-08-upcoming-changes-to-github-events-api-payloads/

The `commits` field (and others) of `$.payload` was removed. Therefore author's emails are no longer available and OSCI is broken.

An alternative could be the "Compare two commits" API (https://docs.github.com/en/rest/commits/commits?apiVersion=2022-11-28#compare-two-commits), but that would cause a lot of API calls with the problem of authorization, throttling, rate limiting and all that.

**Example for old JSON model:**
```json
{
"actor": {
"avatar_url": "https://avatars.githubusercontent.com/u/3818096?",
"display_login": "trungnd1",
"gravatar_id": "",
"id": 3818096,
"login": "trungnd1",
"url": "https://api.github.com/users/trungnd1"
},
"created_at": "2025-10-07T14:00:00Z",
"id": "55724142856",
"payload": {
"before": "61bd13403c1677be260b32ed1a61de586475aeb3",
"commits": [
{
"author": {
"email": "trungnguyen09@gmail.com",
"name": "trungnd1"
},
"distinct": true,
"message": "feat: Improve debug info panel layout\n\nRefactors the debug info panel to use a fixed, bottom-aligned layout with improved styling. This makes the panel more accessible and less obtrusive while still providing essential debugging information.",
"sha": "7d0cba3af297f201f34a2cfa2bb3c972c04f5309",
"url": "https://api.github.com/repos/trungnd1/ai-business-portrait-generator/commits/7d0cba3af297f201f34a2cfa2bb3c972c04f5309"
}
],
"distinct_size": 1,
"head": "7d0cba3af297f201f34a2cfa2bb3c972c04f5309",
"push_id": 27325310385,
"ref": "refs/heads/main",
"repository_id": 1070079734,
"size": 1
},
"public": true,
"repo": {
"id": 1070079734,
"name": "trungnd1/ai-business-portrait-generator",
"url": "https://api.github.com/repos/trungnd1/ai-business-portrait-generator"
},
"type": "PushEvent"
}
```

**Example for new JSON model (missing the `commits` field in `payload`:**
```json
{
"actor": {
"avatar_url": "https://avatars.githubusercontent.com/u/108220804?",
"display_login": "abujobayer0",
"gravatar_id": "",
"id": 108220804,
"login": "abujobayer0",
"url": "https://api.github.com/users/abujobayer0"
},
"created_at": "2025-10-30T00:00:00Z",
"id": "5570150627",
"payload": {
"before": "098c0d7cee2fb852e1042e85568b98e64fde886c",
"head": "b564050fdde40ec4a501dbf997ebd1410bfebbdc",
"push_id": 27861402499,
"ref": "refs/heads/main",
"repository_id": 965587249
},
"public": true,
"repo": {
"id": 965587249,
"name": "abujobayer0/Abu-Talha-Portfolio-Frontend",
"url": "https://api.github.com/repos/abujobayer0/Abu-Talha-Portfolio-Frontend"
},
"type": "PushEvent"
}
```