chore(lambda): remove excludeDevDependencies for capture-ses-events

[halfwhole]

Problem

GitHub action for the edge branch is failing at the serverless deploy step (example).

Likely because the serverless functions were upgraded to v3 in #1900 which involved removing excludeDevDepdencies, but the capture-ses-events lambda function from #1913 still had excludeDevDependencies that was incompatible with v3

Solution

Removed excludeDevDependencies: true from capture-ses-events, action now passes

Tests

• Tested on health staging that's using SES, can see the logs for sending OTPs on CloudWatch

[yong-jie]

thanks for the catch! lgtm