[Feature Request] Support for 1.21.3

[payphone101]

Is your feature request related to a problem? Please describe.
A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
Support for 1.21.3
Describe the solution you'd like
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Update to 1.21.3
Describe alternatives you've considered
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n/a
Additional context
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update server to 1.21.3