Maximum size of the function in lambda#edge - amazon-web-services

Question

I have two serverless functions that are executed in lambda#edge given two cloudfront events: viewer-request and origin-response, I want to implement a nodejs sharp library to scale these images on the fly given some parameters received in the querystring.
The problem is that when I install the mentioned dependency, the deployment package is greater than 9MB, and according to the edge documentation, the functions must be <= 1MB.
Can I do something about it to fix this?
This is my serverless.yml file.
service: scale-otf
provider:
name: aws
timeout: 5
memorySize: 128
runtime: nodejs14.x
lambdaHashingVersion: 20201221
iam:
role: LambdaEdgeRole
plugins:
- serverless-lambda-edge-pre-existing-cloudfront
functions:
request:
handler: dist/request.handler
events:
- preExistingCloudFront:
distributionId: <id-of-my-existing-distribution>
eventType: viewer-request
pathPattern: '*'
includeBody: false
response:
handler: dist/response.handler
events:
- preExistingCloudFront:
distributionId: <id-of-my-existing-distribution>
eventType: origin-response
pathPattern: '*'
includeBody: false
package:
patterns:
- '!**/**'
- 'dist/**'
# Create a Lambda#Edge function via the wizard in Lambda Console
# and then copied the role and pasted it here
resources:
Resources:
LambdaEdgeRole:
Type: AWS::IAM::Role
Properties:
AssumeRolePolicyDocument:
Statement:
- Effect: Allow
Principal:
Service:
- edgelambda.amazonaws.com
- lambda.amazonaws.com
Action:
- sts:AssumeRole
Policies:
- PolicyName: LambdaEdgeExecutionRole
PolicyDocument:
Version: "2012-10-17"
Statement:
- Effect: Allow
Action:
- logs:CreateLogGroup
- logs:CreateLogStream
- logs:PutLogEvents
Resource: "arn:aws:logs:*:*:*"