add changelog for upcoming release v3.4.0

Author: marcom4rtinez

release_notes/v3.4.0.md

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+# Release Notes for Nuts 3.4.0
+
+The latest version of NUTS, 3.4.0, adds a few bug fixes and the option to cache the inventory. This is now the default behavior and can be switched off by using `--nornir-cache-disable`.
+
+* Fix softprops/action-gh-release version by @ubaumann
+* sort vlans before compare, fix #98 by @marcom4rtinez
+* Fix docs by @marcom4rtinez
+* Fix Nornir Config CLI option by @ubaumann
+* Bump certifi from 2024.2.2 to 2024.7.4 by @dependabot
+* Bump urllib3 from 2.2.1 to 2.2.2 by @dependabot
+* Bump zipp from 3.19.0 to 3.19.1 by @dependabot
+* ceos startup config test fails by @marcom4rtinez
+* Add mock project to CI/CD by @ubaumann
+* add regex by @marcom4rtinez
+* add option to not cache the inventory by @marcom4rtinez
+
+
+**Full Changelog**: https://github.com/network-unit-testing-system/nuts/compare/v3.3.0...v3.4.0