chore(main): release core 28.6.0 (#4154)

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


##
[28.6.0](core-v28.5.0...core-v28.6.0)
(2025-06-11)


### Features

* **api:** implement `unstable_gasPerPubdata`
([#4124](#4124))
([925d2eb](925d2eb))
* **config:** Report config params in more ways
([#4126](#4126))
([a78531c](a78531c))
* **en:** make `max_batches_to_recheck` configurable
([#4082](#4082))
([358687f](358687f))
* **eth-sender:** use last value in gas adjuster for gateway txs
([#4149](#4149))
([995920a](995920a))


### Bug Fixes

* **config:** Fix `max_response_body_size_overrides` deserialization
([#4165](#4165))
([0c47b7b](0c47b7b))
* **config:** Fix parsing null values with units + other config fixes
([#4168](#4168))
([506b458](506b458))
* **consensus:** Make leader in Consensus config optional
([#4145](#4145))
([5761dbb](5761dbb))


### Performance Improvements

* Jemalloc instrumentation / stats
([#4159](#4159))
([12271c8](12271c8))

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

---------

Co-authored-by: zksync-era-bot <[email protected]>

Author: zksync-era-bot

.github/release-please/manifest.json

@@ -1,5 +1,5 @@
 {
-  "core": "28.5.0",
+  "core": "28.6.0",
   "prover": "21.1.0",
   "zkstack_cli": "0.1.2"
 }

core/CHANGELOG.md

@@ -1,5 +1,27 @@
 # Changelog
 
+## [28.6.0](https://github.com/matter-labs/zksync-era/compare/core-v28.5.0...core-v28.6.0) (2025-06-11)
+
+
+### Features
+
+* **api:** implement `unstable_gasPerPubdata` ([#4124](https://github.com/matter-labs/zksync-era/issues/4124)) ([925d2eb](https://github.com/matter-labs/zksync-era/commit/925d2eb2dd7f126076a3c3612c509a7a9a523037))
+* **config:** Report config params in more ways ([#4126](https://github.com/matter-labs/zksync-era/issues/4126)) ([a78531c](https://github.com/matter-labs/zksync-era/commit/a78531c3fb7f8a2d50a120ab6fbd282d1dd9dd28))
+* **en:** make `max_batches_to_recheck` configurable ([#4082](https://github.com/matter-labs/zksync-era/issues/4082)) ([358687f](https://github.com/matter-labs/zksync-era/commit/358687f4df8ccf92eecc12aea1497e35006349b3))
+* **eth-sender:** use last value in gas adjuster for gateway txs ([#4149](https://github.com/matter-labs/zksync-era/issues/4149)) ([995920a](https://github.com/matter-labs/zksync-era/commit/995920a7d6dd92f7ab7538e0b06a7bcb9df2feb0))
+
+
+### Bug Fixes
+
+* **config:** Fix `max_response_body_size_overrides` deserialization ([#4165](https://github.com/matter-labs/zksync-era/issues/4165)) ([0c47b7b](https://github.com/matter-labs/zksync-era/commit/0c47b7b4bd627adc8857ec81edd0c70f8d26db83))
+* **config:** Fix parsing null values with units + other config fixes ([#4168](https://github.com/matter-labs/zksync-era/issues/4168)) ([506b458](https://github.com/matter-labs/zksync-era/commit/506b45844b280c1bd79c772fa8408d2ef3c1d3b9))
+* **consensus:** Make leader in Consensus config optional ([#4145](https://github.com/matter-labs/zksync-era/issues/4145)) ([5761dbb](https://github.com/matter-labs/zksync-era/commit/5761dbbc4df85c675da6e341da2f26acef6ce8b6))
+
+
+### Performance Improvements
+
+* Jemalloc instrumentation / stats ([#4159](https://github.com/matter-labs/zksync-era/issues/4159)) ([12271c8](https://github.com/matter-labs/zksync-era/commit/12271c8142e21ccd3e818a769b29e9bac106539d))
+
 ## [28.5.0](https://github.com/matter-labs/zksync-era/compare/core-v28.4.0...core-v28.5.0) (2025-06-06)