Add CHANGELOG entry

CHANGELOG.md

@@ -5,7 +5,7 @@
 - [#2834](https://github.com/poanetwork/blockscout/pull/2834) - always redirect to checksummed hash
 
 ### Fixes
-- [#3021](https://github.com/poanetwork/blockscout/pull/3021) - Refine dev config
+- [#3021](https://github.com/poanetwork/blockscout/pull/3021), [#3022](https://github.com/poanetwork/blockscout/pull/3022) - Refine dev/test config
 - [#3016](https://github.com/poanetwork/blockscout/pull/3016), [#3017](https://github.com/poanetwork/blockscout/pull/3017) - Fix token instance QR code data
 - [#3014](https://github.com/poanetwork/blockscout/pull/3014) - Fix checksum address feature for tokens pages
 - [#3012](https://github.com/poanetwork/blockscout/pull/3012) - Speedup token transfers list query

apps/explorer/config/test.exs

@@ -5,7 +5,8 @@ config :bcrypt_elixir, log_rounds: 4
 
 # Configure your database
 config :explorer, Explorer.Repo,
-  url: System.get_env("DATABASE_URL"),
+  database: "explorer_test",
+  hostname: "localhost",
   pool: Ecto.Adapters.SQL.Sandbox,
   # Default of `5_000` was too low for `BlockFetcher` test
   ownership_timeout: :timer.minutes(1)