UnmarshalTypeError on CodePipelineEventBridgeEvent

**Is your feature request related to a problem? Please describe.**

Triggering a lambda with EventBridge CodePipeline events, i.e.:

```json
{
"detail-type": [
"CodePipeline Pipeline Execution State Change",
"CodePipeline Stage Execution State Change",
"CodePipeline Action Execution State Change"
],
"source": [
"aws.codepipeline"
]
}
```

The Lambda in question has this structure:

```go
func handler(_ context.Context, event *events.CodePipelineEventBridgeEvent) error {}
```

Upon execution, it almost immediately fails and outputs one of two errors (so far):

```
json: cannot unmarshal number 2.0 into Go struct field CodePipelineEventDetail.detail.version of type int64
```

```
json: cannot unmarshal string into Go struct field CodePipelineEventDetailType.detail.type.version of type int64
```

**Describe the solution you'd like**

I'm fairly certain I'm using the correct event type here, but I could be wrong. However, I'd like a solution to the lambda not failing immediately and the type being correct for what EventBridge is passing into the lambda.