chore(CHANGELOG): prepare for next release

Author: tcort

CHANGELOG.md

@@ -1,7 +1,15 @@
 # Changes
 
+## Version 5.5.0
+
+Changes:
+
+* support multiple e-mail addresses in a single `mailto:` @DanielYang59
+
 ## Version 5.4.0
 
+Changes:
+
 * Defer protocol imports #89 @mondeja
 * Decrease package size #90 @mondeja
 * ci: use current node.js versions in matrix build #93 @MikeMcC399
@@ -12,6 +20,8 @@
 
 ## Version 5.3.0
 
+Changes:
+
 * fix failing github action with IPv6 @dklimpel
 * Add http proxy support @dklimpel
 * docs: Format with Markdownlint @nschonni