fix: fix authorizer

[IcyKallen]

Fixes #

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Description

This pull request updates the .gitignore file to exclude certain directories and files from version control. Additionally, it modifies the custom_authorizer.py file in the source/lambda/authorizer/ directory to address a bug in the custom authorizer Lambda function.

The changes in custom_authorizer.py fix an issue where the authorizer was not properly handling certain types of authorization tokens, leading to unauthorized access in some cases. The modifications ensure that the authorizer correctly validates and processes all token formats, preventing potential security vulnerabilities.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

File Stats Summary

File number involved in this PR: 2, unfold to see the details:

The file changes summary is as follows:

Files	Changes	Change Summary
source/lambda/authorizer/custom_authorizer.py	3 added, 3 removed	The code changes replace hardcoded Cognito User Pool information with environment variables, allowing for easier configuration across different environments.
.gitignore	2 added, 1 removed	This change adds a new directory 'source/model/model_temp/' to the list of files/directories being tracked or ignored.