release: prepare for release v1.4.9

[zzzckck]

Description

v1.4.9 is a maintenance release, which mainly addressed some issues about: prune-block, multi-database and MEV
There is no compatible change, to upgrade to v1.4.9 from v1.4.x, simply replace the binary should work.

Change Log

FEATURE

• #2463 utils: add check_blobtx.js
• #2470 jsutils: faucet successful requests within blocks
• #2467 internal/ethapi: add optional parameter for blobSidecars

IMPROVEMENT

• #2462 cmd/utils: add a flag to change breathe block interval for testing
• #2497 params/config: add Bohr hardfork
• #2479 dev: ensure consistency in BPS bundle result

BUGFIX

• #2461 eth/handler: check lists in body before broadcast blocks
• #2455 cmd: fix memory leak when big dataset
• #2466 sync: fix some sync issues caused by prune-block.
• #2475 fix: move mev op to MinerAPI & add command to console
• #2473 fix: limit the gas price of the mev bid
• #2484 fix: fix inspect database error
• #2481 fix: keep 9W blocks in ancient db when prune block
• #2495 fix: add an empty freeze db
• #2507 fix: waiting for the last simulation before pick best bid

Example

NA

Compatibility

NA