refactor: set epoch 3.0 block height #3804

Job	Run time
Generate test coverage	7m 53s
Cancel previous runs	3s
Get Release Info	6s
Audit and format	20s
Build Clarity REPL Distribution	3m 54s
Build Clarinet Distributions (ubuntu-latest, linux, x86_64-unknown-linux-gnu, x64, glibc)	10m 58s
Build Clarinet Distributions (windows-latest, windows, x86_64-pc-windows-msvc, x64)	29m 20s
Build Clarinet Distributions (macos-latest, darwin, x86_64-apple-darwin, x64)	8m 8s
Build Clarinet Distributions (macos-latest, darwin, aarch64-apple-darwin, arm64)	7m 16s
Build Stacks Devnet JS Distributions (ubuntu-latest, linux, x86_64-unknown-linux-gnu, x64, glibc)	8m 23s
Build Stacks Devnet JS Distributions (windows-latest, windows, x86_64-pc-windows-msvc, x64)	16m 47s
Build Stacks Devnet JS Distributions (macos-latest, darwin, x86_64-apple-darwin, x64)	7m 38s
Build Stacks Devnet JS Distributions (macos-latest, darwin, aarch64-apple-darwin, arm64)	5m 53s
Build Stacks Devnet JS Distributions (ubuntu-latest, linux, x86_64-unknown-linux-musl, x64, musl)	16m 21s
Create Clarinet Docker Image	10m 41s
Release	0s
	2h 13m 41s

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