aws: Update main changelog to reflect 3.17 backported fixes

[kcreddy]

Proposed commit message

aws: Update main changelog to reflect 3.17 backported fixes.

Backport fixes:
3.17.1: #16998
3.17.2: #17064

Note

To be merged after #17064

Checklist

• I have reviewed tips for building integrations and this pull request is aligned with them.
• I have verified that all data streams collect metrics or logs.
• I have added an entry to my package's changelog.yml file.
• I have verified that Kibana version constraints are current according to guidelines.
• I have verified that any added dashboard complies with Kibana's Dashboard good practices

Related issues

• Related chore: remove CloudWatch lastSync option from older tracks as it is incompatible with Kibana versions below 9.x #16998
• Related aws.cloudtrail: Fix lambda events parsing of vpcConfig.securityGroupIds and vpcConfig.subnetIds fields #17064

[elasticmachine]

Pinging @elastic/security-service-integrations (Team:Security-Service Integrations)

[elasticmachine]

💚 Build Succeeded

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• Commit: e8b559f

cc @kcreddy