Add changelog

Author: dagnir

.changes/next-release/bugfix-Apache5HTTPClientPreview-ee81371.json

@@ -0,0 +1,6 @@
+{
+    "type": "bugfix",
+    "category": "Apache5 HTTP Client (Preview)",
+    "contributor": "",
+    "description": "Update `Apache5HttpClient` so that it uses connection TTL as 'infinite' if `CONNECTION_TIME_TO_LIVE` is not explicitly configured by the user."
+}