[backport beta]: add eip1344_transition for istanbul (#11304)

* [chainspec]: add `eip1344_transition` for istanbul (#11301)

* Update version and CHANGELOG.md

CHANGELOG.md

@@ -1,3 +1,12 @@
+## Parity-Ethereum [v2.6.6](https://github.com/paritytech/parity-ethereum/releases/tag/v2.6.6)
+
+Parity Ethereum v2.6.6-beta is an emergency patch release that adds the missing
+eip1344_transition for mainnet - Users are advised to update as soon as possible
+to prevent any issues with the imminent Istanbul hardfork
+
+The full list of included changes:
+* [chainspec]: add `eip1344_transition` for istanbul (#11301)
+
 ## Parity-Ethereum [v2.6.5](https://github.com/paritytech/parity-ethereum/releases/tag/v2.6.5)
 
 Parity Ethereum v2.6.5-beta is a patch release that adds block numbers for activating the Istanbul hardfork on mainnet, as well as a large number of various bugfixes, QoL changes, some code cleanup/refactoring and other miscellaneous changes.

Cargo.toml

@@ -2,7 +2,7 @@
 description = "Parity Ethereum client"
 name = "parity-ethereum"
 # NOTE Make sure to update util/version/Cargo.toml as well
-version = "2.6.5"
+version = "2.6.6"
 license = "GPL-3.0"
 authors = ["Parity Technologies <admin@parity.io>"]
 

ethcore/res/ethereum/foundation.json

@@ -167,7 +167,8 @@
 		"eip1283Transition": "0x8a61c8",
 		"eip1706Transition": "0x8a61c8",
 		"eip1884Transition": "0x8a61c8",
-		"eip2028Transition": "0x8a61c8"
+		"eip2028Transition": "0x8a61c8",
+		"eip1344Transition": "0x8a61c8"
 	},
 	"genesis": {
 		"seal": {

util/version/Cargo.toml

@@ -3,7 +3,7 @@
 [package]
 name = "parity-version"
 # NOTE: this value is used for Parity Ethereum version string (via env CARGO_PKG_VERSION)
-version = "2.6.5"
+version = "2.6.6"
 authors = ["Parity Technologies <admin@parity.io>"]
 build = "build.rs"