Merge pull request #4909 from stacks-network/chore/2.5.0.0.4-changelog

Add PR's to the changelog for 2.5.0.0.4

Author: wileyj

CHANGELOG.md

@@ -32,6 +32,8 @@ and this project adheres to the versioning scheme outlined in the [README.md](RE
 - Update /v2/fees/transfer to report the median transaction fee estimate for a STX-transfer of 180 bytes (#4754)
 - Reduce connection spamming in stackerdb (#4759)
 - Remove deprecated signer cli commands (#4772)
+- Extra pair of signer slots got introduced at the epoch 2.5 boundary (#4845, #4868, #4891)
+- Never consider Stacks chain tips that are not on the canonical burn chain #4886 (#4893)
 
 
 ## [2.5.0.0.3]