fix(dev): ensures that dev mode supports the serverless-iam-role-per-function plugin (#12633)

lib/plugins/aws/dev/index.js

@@ -589,6 +589,22 @@ class AwsDev {
       functionConfig.environment.SLS_SERVICE = serviceName
       functionConfig.environment.SLS_STAGE = stageName
       functionConfig.environment.SLS_FUNCTION = functionName
+
+      // Make sure dev mode also supports the "serverless-iam-roles-per-function" plugin:
+      // https://github.com/functionalone/serverless-iam-roles-per-function
+      // Issue Ref: https://github.com/serverless/serverless/issues/12619
+      if (
+        functionConfig.iamRoleStatements &&
+        Array.isArray(functionConfig.iamRoleStatements)
+      ) {
+        const functionIamRoleStatements = functionConfig.iamRoleStatements
+
+        functionIamRoleStatements.push({
+          Effect: 'Allow',
+          Action: ['iot:*'],
+          Resource: '*',
+        })
+      }
     })
 
     // Disable observability if it's enabled