feat(protocol): reduce ring-buffer size to reduce proposer cost

[dantaik]

Now we assume the average block time is 12s, and the ring buffer will be filled out in 60 days.
60*86400/12 = 432_000

[openzeppelin-code]

feat(protocol): reduce ring-buffer size to reduce proposer cost

Generated at commit: e515642440509ab679a05a6f13124545b2992148

🚨 Report Summary

	Severity Level	Results
Contracts	Critical High Medium Low Note Total	2 2 0 8 42 54
Dependencies	Critical High Medium Low Note Total	0 0 0 0 0 0

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