Release Notes:

Rollup-Boost now sends engine_getPayload for every block even when flashblocks are enabled in this PR. The result from the call is not used by rollup-boost but is needed to cancel the builder's block building job so the flashblocks gets saved into the builder cache. Previously it would only get the builder payload when constructing the block from the websocket stream fails. Rollup-boost ignores it result, and this acts as builder jobs cancellation.
New flag --external-state-root that allows rollup-boost to delegate the local execution client to calculate the state root
New flag --ignore-unhealthy-builders that does not allow engine API calls to go through when health checks fail
Added rollup_boost_execution_mode metric to inspect rollup-boost execution mode

What's Changed

Moves WorkloadId to policy and adds extended registration data by @Ruteri in #382
Bump reth to 1.6 by @krl in #383
fix: ping/pong upstream server by @danyalprout in #355
Update flashtestations.md by @MoeMahhouk in #384
Fix release workflow by @sukoneck in #386
Always send get_payload to builder by @SozinM in #385
Rollup Boost Docs Page by @avalonche in #394
Fixes Flashtestations table of contents by @Ruteri in #392
Add websocket proxy release flow by @avalonche in #396
Fix release docker tags by @avalonche in #398
Upgrade deps to reth 1.7.0 and fix kurtosis by @avalonche in #406
add metric to inspect current execution mode by @akundaz in #400
Add external_state_root and ignore_unhealthy_builders by @cody-wang-cb in #381
chore: namespace and rename gh workflows by @0x416e746f6e in #407
Rate limit per app/api-key on the authed endpoint by @avalonche in #405
Bump reth version by @SozinM in #416

Full Changelog: v0.7.4...rollup-boost/v0.7.5