chore(main): release core 18.6.1 (#616)

🤖 I have created a release *beep* *boop*
---


##
[18.6.1](core-v18.6.0...core-v18.6.1)
(2023-12-06)


### Performance Improvements

* **external-node:** Use async miniblock sealing in external IO
([#611](#611))
([5cf7210](5cf7210))

---
This PR was generated with [Release
Please](https://github.com/googleapis/release-please). See
[documentation](https://github.com/googleapis/release-please#release-please).

Author: zksync-era-bot

.github/release-please/manifest.json

@@ -1,5 +1,5 @@
 {
   "sdk/zksync-rs": "0.4.0",
-  "core": "18.6.0",
+  "core": "18.6.1",
   "prover": "10.0.0"
 }

core/CHANGELOG.md

@@ -1,5 +1,12 @@
 # Changelog
 
+## [18.6.1](https://github.com/matter-labs/zksync-era/compare/core-v18.6.0...core-v18.6.1) (2023-12-06)
+
+
+### Performance Improvements
+
+* **external-node:** Use async miniblock sealing in external IO ([#611](https://github.com/matter-labs/zksync-era/issues/611)) ([5cf7210](https://github.com/matter-labs/zksync-era/commit/5cf7210dc77bb615944352f23ed39fad324b914f))
+
 ## [18.6.0](https://github.com/matter-labs/zksync-era/compare/core-v18.5.0...core-v18.6.0) (2023-12-05)