chore(main): release 1.10.0 (#54)

🤖 I have created a release *beep* *boop*
---


##
[1.10.0](v1.9.1...v1.10.0)
(2025-07-01)


### Features

* Add header support
([#53](#53))
([b3a725f](b3a725f))

---
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Please](https://github.com/googleapis/release-please). See
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.release-please-manifest.json

@@ -1,3 +1,3 @@
 {
-  ".": "1.9.1"
+  ".": "1.10.0"
 }

CHANGELOG.md

@@ -2,6 +2,13 @@
 
 All notable changes to the project will be documented in this file. This project adheres to [Semantic Versioning](http://semver.org).
 
+## [1.10.0](https://github.com/launchdarkly/eventsource/compare/v1.9.1...v1.10.0) (2025-07-01)
+
+
+### Features
+
+* Add header support ([#53](https://github.com/launchdarkly/eventsource/issues/53)) ([b3a725f](https://github.com/launchdarkly/eventsource/commit/b3a725fa09fb8fb5e6d4ec76483f278809c7f1f4))
+
 ## [1.9.1](https://github.com/launchdarkly/eventsource/compare/v1.9.0...v1.9.1) (2025-06-02)