ci(NODE-6747): fix deployed lambda tests (#4410)

Author: baileympearson

.evergreen/config.in.yml

@@ -971,11 +971,12 @@ tasks:
           working_dir: src
           binary: bash
           add_expansions_to_env: true
-          args:
-            - ${DRIVERS_TOOLS}/.evergreen/aws_lambda/run-deployed-lambda-aws-tests.sh
-          env:
+          env: 
+            LAMBDA_STACK_NAME: dbx-node-lambda
             TEST_LAMBDA_DIRECTORY: ${PROJECT_DIRECTORY}/test/lambda
             AWS_REGION: us-east-1
+          args:
+            - ${DRIVERS_TOOLS}/.evergreen/aws_lambda/run-deployed-lambda-aws-tests.sh
 
   - name: test-search-index-helpers
     commands:

.evergreen/config.yml

@@ -891,11 +891,12 @@ tasks:
           working_dir: src
           binary: bash
           add_expansions_to_env: true
-          args:
-            - ${DRIVERS_TOOLS}/.evergreen/aws_lambda/run-deployed-lambda-aws-tests.sh
           env:
+            LAMBDA_STACK_NAME: dbx-node-lambda
             TEST_LAMBDA_DIRECTORY: ${PROJECT_DIRECTORY}/test/lambda
             AWS_REGION: us-east-1
+          args:
+            - ${DRIVERS_TOOLS}/.evergreen/aws_lambda/run-deployed-lambda-aws-tests.sh
   - name: test-search-index-helpers
     commands:
       - command: expansions.update