Update RFC table in README (#608)

Automated changes by [create-pull-request](https://github.com/peter-evans/create-pull-request) GitHub action

CLOSED.md

@@ -33,7 +33,6 @@
 [457](https://github.com/aws/aws-cdk-rfcs/issues/457)|[Create fluent-assertions library to improve consumer test readability](https://github.com/aws/aws-cdk-rfcs/issues/457)|[@MrArnoldPalmer](https://github.com/MrArnoldPalmer)|👎 rejected
 [458](https://github.com/aws/aws-cdk-rfcs/issues/458)|[Service Catalog ProductStack Asset Support](https://github.com/aws/aws-cdk-rfcs/issues/458)||👎 rejected
 [465](https://github.com/aws/aws-cdk-rfcs/issues/465)|[AWS Organizations L2 Construct](https://github.com/aws/aws-cdk-rfcs/issues/465)||👎 rejected
-[469](https://github.com/aws/aws-cdk-rfcs/issues/469)|[AWS Lambda for .NET Support](https://github.com/aws/aws-cdk-rfcs/issues/469)||👎 rejected
 [470](https://github.com/aws/aws-cdk-rfcs/issues/470)|[Amazon Aurora Serverless v2 support](https://github.com/aws/aws-cdk-rfcs/issues/470)||👎 rejected
 [481](https://github.com/aws/aws-cdk-rfcs/issues/481)|[Add L2 constructs for Amazon Redshift Serverless](https://github.com/aws/aws-cdk-rfcs/issues/481)||👎 rejected
 [483](https://github.com/aws/aws-cdk-rfcs/issues/483)|[AppFlow L2 Constructs](https://github.com/aws/aws-cdk-rfcs/issues/483)|[@iliapolo](https://github.com/iliapolo)|👎 rejected

FULL_INDEX.md

@@ -139,7 +139,7 @@
 [463](https://github.com/aws/aws-cdk-rfcs/issues/463)|[Glue View L2 Construct](https://github.com/aws/aws-cdk-rfcs/issues/463)||🤷 stale
 [465](https://github.com/aws/aws-cdk-rfcs/issues/465)|[AWS Organizations L2 Construct](https://github.com/aws/aws-cdk-rfcs/issues/465)||👎 rejected
 [467](https://github.com/aws/aws-cdk-rfcs/issues/467)|[Add L2 constructs for Amazon FSx Windows](https://github.com/aws/aws-cdk-rfcs/issues/467)|[@rix0rrr](https://github.com/rix0rrr)|🤷 stale
-[469](https://github.com/aws/aws-cdk-rfcs/issues/469)|[AWS Lambda for .NET Support](https://github.com/aws/aws-cdk-rfcs/issues/469)||👎 rejected
+[469](https://github.com/aws/aws-cdk-rfcs/issues/469)|[AWS Lambda for .NET Support](https://github.com/aws/aws-cdk-rfcs/issues/469)||💡 proposed
 [470](https://github.com/aws/aws-cdk-rfcs/issues/470)|[Amazon Aurora Serverless v2 support](https://github.com/aws/aws-cdk-rfcs/issues/470)||👎 rejected
 [471](https://github.com/aws/aws-cdk-rfcs/issues/471)|[Amazon Managed Grafana L2 Constructs](https://github.com/aws/aws-cdk-rfcs/issues/471)||🤷 stale
 [473](https://github.com/aws/aws-cdk-rfcs/issues/473)|[EventBridge Pipes L2 Construct](https://github.com/aws/aws-cdk-rfcs/blob/main/text/0473-eventbridge-pipes.md)|[@mrgrain](https://github.com/mrgrain)|👷 implementing

PROPOSED.md

@@ -11,5 +11,6 @@
 ---|-----|-----|------
 [72](https://github.com/aws/aws-cdk-rfcs/issues/72)|[Stack Policy](https://github.com/aws/aws-cdk-rfcs/issues/72)||💡 proposed
 [437](https://github.com/aws/aws-cdk-rfcs/issues/437)|[CDK post-deployment experience](https://github.com/aws/aws-cdk-rfcs/issues/437)||💡 proposed
+[469](https://github.com/aws/aws-cdk-rfcs/issues/469)|[AWS Lambda for .NET Support](https://github.com/aws/aws-cdk-rfcs/issues/469)||💡 proposed
 [489](https://github.com/aws/aws-cdk-rfcs/issues/489)|[Add API to register and execute code before or after CDK App lifecycle events](https://github.com/aws/aws-cdk-rfcs/issues/489)||💡 proposed
 <!--END_TABLE-->