Fix for Terms & Conditions

[philogicae]

Required for aleph-im/aleph-client#311

[github-actions]

Summary:
This PR introduces a new configuration setting for the IPFS gateway URL. This change is straightforward and does not affect existing functionality significantly. It primarily serves to update the configuration for accessing IPFS resources, which is a minor update focused on improving the SDK's capabilities without altering its core behavior.

Highlight:

@@ -85,6 +85,7 @@ class Settings(BaseSettings):
 
     VM_URL_PATH = "https://aleph.sh/vm/{hash}"
     VM_URL_HOST = "https://{hash_base32}.aleph.sh"
+    IPFS_GATEWAY = "https://ipfs.aleph.cloud/ipfs/"
 
     # Web3Provider settings
     TOKEN_DECIMALS = 18

This change is a straightforward addition to the configuration, aimed at improving the SDK's ability to interact with IPFS, without introducing any new features or altering existing functionalities. It is a maintenance update that enhances the SDK's capabilities without increasing the risk of introducing bugs.