docs: updated CHANGELOG with releases 6.1.10 and 6.1.9 (#38)

* updated CHANGELOG with releases 6.1.0 and 6.1.9

docs/CHANGELOG.md

@@ -1,5 +1,24 @@
 # CHANGELOG
 
+## 6.1.10 (December, 2023)
+### Features:
+- Add `proxyProtocol` parameter for ALB and NLB targets
+
+### Fixes:
+- Allow setting `Host` and `Scheme` when creating a client with a `serverUrl` (@maxbischoff)
+
+### Enhancements
+- Remove usage of deprecated `ioutil` package (@avorima)
+
+### Documentation
+- Move docs for Url with context to `api_doc.mustache`
+
+
+## 6.1.9 (September, 2023)
+### Features:
+- Support injecting `x-contract-number` header through environment variable.
+
+
 ## 6.1.8 (July, 2023)
 ### Features:
 Added support for **IPv6**:
@@ -10,12 +29,12 @@ Added support for **IPv6**:
 
 More details about IPv6 configuration can be found [here](https://docs.ionos.com/cloud/compute-engine/networks/ipv6).
 
-
 ### Fixes:
 - Go client backoff now respects context cancellation
 
 **Full Changelog**: https://github.com/ionos-cloud/sdk-go/compare/v6.1.7...v6.1.8
 
+
 ## 6.1.7 (June, 2023)
 ### Features:
 - New licenceType supported: **RHEL**