v4.2.0-rc.1

[prestonvanloon]

Release candidate for v4.2.0, including:

Support for Goerli Dencun fork
Many dencun improvements from devnets 10, 11, and 12.
Full notes to come in the final release.

Full diff https://github.com/prysmaticlabs/prysm/compare/v4.1.1..v4.2.0-rc.1

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This discussion was created from the release v4.2.0-rc.1.