This is ONLY for TESTNET Release

What's Changed

• test exp timeout on devnet by @benjamin202410 in #824
• core: improve the output format of report block by @gzliudan in #827
• params: add Cancun blocks and improve the output of chain config by @gzliudan in #826
• upgrade core/vm by @gzliudan in #828
• core/vm: implement EIP-5656, mcopy instruction by @gzliudan in #834
• add backup rpc to cicd by @wanwiset25 in #835
• all: use types.EmptyRootHash instead of null by @gzliudan in #836
• consensus, internal, contracts: remove extra hash and string conversions by @JukLee0ira in #830
• core/state, core/vm: implement EIP 6780 by @gzliudan in #837
• implement EIP-7516 by @gzliudan in #839
• crypto/kz4844: pass blobs by ref by @gzliudan in #840
• all: clean up and properly abstract database accesses by @gzliudan in #841
• eth/downloader: fix 2 bugs by @gzliudan in #842
• refactor: more logs on countdown by @wgr523 in #859
• core/vm: implement the BLOBHASH opcode 0x49 by @gzliudan in #843
• common: refactor constants by @gzliudan in #846
• cmd/XDC: remove genesis file dependency for XDC init command by @gzliudan in #849
• eth: set networkID to chainId by default by @gzliudan in #850
• cmd: deprecate the --mine flag by @gzliudan in #851
• cmd/utils: deprecate flag --XDCx-datadir by @gzliudan in #854
• cmd/utils: change default value of some flags to simplify sync by @gzliudan in #855
• params: update bootnodes by @gzliudan in #857
• params: print chain configuration in more detail by @gzliudan in #860
• performance: remove extra conversions by @JukLee0ira in #858
• cmd: use slices.Concat instead of GroupFlags by @gzliudan in #864
• cmd, common, eth: copy constants after get chain id by @gzliudan in #866
• genesis: update genesis file for devnet by @gzliudan in #867
• p2p, p2p/discover: add dial metrics by @JukLee0ira in #829
• core: tidy up genesis alloc data by @gzliudan in #868
• common: update eip1559 block number for testnet by @gzliudan in #869
• cmd/utils: disable kzg4844 by @gzliudan in #870
• core/vm: enable cancun instruction set by @gzliudan in #861
• all: clean up the network flags by @gzliudan in #863
• core: fix special tx cause debug API fail after EIP-1559 by @gzliudan in #874
• node: warn when using deprecated config/resource files by @gzliudan in #875
• cmd/XDC, core/rawdb: add db command inspect by @gzliudan in #876
• cmd: remove deprecated flags --fast and --light by @gzliudan in #877
• cmd/utils: not set Etherbase when flag --unlock is set by @gzliudan in #872
• fix private devnet with private ip by @benjamin202410 in #879
• common: not copy constants file for compatibility by @gzliudan in #873
• core: remove the duplicate function getProcInterrupt() by @JukLee0ira in #885
• core: fix integer divide by zero in the function ValidateHeaderChain by @gzliudan in #882
• upgrade downloader by @gzliudan in #881
• cmd, common, core: optimize rollback by flag by @gzliudan in #887
• eth/downloader: speed up tests by generating chain only once by @gzliudan in #889
• cmd/utils: handle err returned by eth.New to fix panic by @gzliudan in #888
• all: update to go version 1.23 by @JukLee0ira in #844

Full Changelog: v2.6.0-beta...v2.6.3-beta