bump changelog to v1.1.1

CHANGELOG.md

@@ -8,7 +8,7 @@ Operators, you should copy/paste content of this content straight to your projec
 
 If you were at `firehose-core` version `1.0.0` and are bumping to `1.1.0`, you should copy the content between those 2 version to your own repository, replacing placeholder value `fire{chain}` with your chain's own binary.
 
-# UNRELEASED
+# v1.1.1
 
 * Added `FORCE_FINALITY_AFTER_BLOCKS` environment variable to override block finality information at the reader/poller level. This allows an operator to pretend that finality is still progressing, N blocks behind HEAD, in the case where a beacon chain fails to do so and is intended as a workaround for deprecated chains like Goerli.