Update invoice-ninja to version v5.11.7

[nmfretz]

🤖 This is an automated pull request to update invoice-ninja to version v5.11.7. This PR must be reviewed and tested before merging.

[nmfretz]

🤖 This is an automated summary of installation tests for invoice-ninja:

• ✅ App successfully installed in umbrel-dev instance
• ❌ App not listed in umbrel.yaml
• ⚠️ App UI accessibility was not tested

This PR must still be reviewed and tested before merging.

[github-actions]

🎉   Linting finished with no errors or warnings   🎉

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Please review the linting results below and make any necessary changes to your submission.

Linting Results

Severity	File	Description
ℹ️	invoice-ninja/docker-compose.yml	Potentially using unsafe user in service "nginx": The default container user "root" can lead to security vulnerabilities. If you are using the root user, please try to specify a different user (e.g. "1000:1000") in the compose file or try to set the UID/PUID and GID/PGID environment variables to 1000.

Legend

Symbol	Description
❌	Error: This must be resolved before this PR can be merged.
⚠️	Warning: This is highly encouraged to be resolved, but is not strictly mandatory.
ℹ️	Info: This is just for your information.

[nmfretz]

From testing it appears that we need to upgrade the mariadb image as of invoice-ninja v5.11.1 (first version where we see the following error):

In Process.php line 270:
                                                                               
  The command "mysql  --user="${:LARAVEL_LOAD_USER}" --password="${:LARAVEL_L  
  OAD_PASSWORD}" --host="${:LARAVEL_LOAD_HOST}" --port="${:LARAVEL_LOAD_PORT}  
  " --database="${:LARAVEL_LOAD_DATABASE}" < "${:LARAVEL_LOAD_PATH}"" failed.  
                                                                               
  Exit Code: 1(General error)                                                  
                                                                               
  Working directory: /var/www/app                                              
                                                                               
  Output:                                                                      
  ================                                                             
                                                                               
                                                                               
  Error Output:                                                                
  ================                                                             
  mysql: Deprecated program name. It will be removed in a future release, use  
   '/usr/bin/mariadb' instead                                                  
  ERROR 2026 (HY000): TLS/SSL error: SSL is required, but the server does not  
   support it                      

Using mariadb:latest resolves this issue.

TODO: look into safely upgrading mariadb.