Date Picker showing malformed year

[overbyrn]

Device Information (please complete the following information):

• OS: [e.g., Ubuntu 20.04, WSL2] Debian 11
• Deployment: [Linux, Linux ARM64 or Docker] Docker ( simon987/sist2:x64-linux )
• Browser (if relevant): [e.g., chrome, safari]
• SIST2 Version: [e.g., v2.9.0] 3.1.2
• Elasticsearch Version (if relevant) : `` 7.17.9

Describe the bug
Date Picker showing malformed year. This only occurs when using Elasticsearch as the backend

Screenshots

[simon987]

Fixed in 5a1a046, will be included in the next release