Security Patch + HF (kaspanet#2142)

* HF

* Fix lint

Update changelog for v0.12.6 (kaspanet#2136)

Don't resolve virtual if updateVirtual

Update changelog.txt for v0.12.5 (kaspanet#2130)

* Update changelog.txt for v0.12.5

* Update version and add kaspanet#2131 to changelog.txt

Bump version

Fix daa score to chain block

Bump version and changelog for v0.12.4 (kaspanet#2118)

* Bump version and changelog

Bump version

Merge branch 'utxo-child-bug' into bump_v0.12.4-rc1

bump to version 0.12.4