fix: Mark GuKinesisLambda and GuSnsLambda patterns as alpha

The shape of the incoming props, specifically around handling of an existing resource,
is likely to be changed over time as we understand use-cases. So, annotate these patterns as `alpha`.

src/patterns/kinesis-lambda.ts

@@ -95,6 +95,8 @@ export interface GuKinesisLambdaProps extends Omit<GuFunctionProps, "errorPercen
  * This pattern will create a new Kinesis stream by default. If you are migrating a stack from CloudFormation,
  * you will need to opt-out of this behaviour. For information on overriding the default behaviour,
  * see [[`GuKinesisLambdaProps`]].
+ *
+ * @alpha This pattern is in early development. The API is likely to change in future releases.
  */
 export class GuKinesisLambda extends GuLambdaFunction {
   constructor(scope: GuStack, id: string, props: GuKinesisLambdaProps) {

src/patterns/sns-lambda.ts

@@ -77,6 +77,8 @@ export interface GuSnsLambdaProps extends Omit<GuFunctionProps, "errorPercentage
  * This pattern will create a new SNS topic by default. If you are migrating a stack from CloudFormation,
  * you will need to opt-out of this behaviour. For information on overriding the default behaviour,
  * see [[`GuSnsLambdaProps`]].
+ *
+ * @alpha This pattern is in early development. The API is likely to change in future releases.
  */
 export class GuSnsLambda extends GuLambdaFunction {
   constructor(scope: GuStack, id: string, props: GuSnsLambdaProps) {