Update dependency neuvector to v2.7.6

Author: renovate[bot]

CHANGELOG.md

@@ -15,7 +15,7 @@
 
   - longhorn version: 1.6.0
 
-  - neuvector version: 2.7.2
+  - neuvector version: 2.7.6
 
 <!-- End Release -->
 

README.md

@@ -24,7 +24,7 @@ This Ansible collection will install in airgap environnement RKE2 (one controler
 
 - [Longhorn 1.6.0](https://longhorn.io) - Unified storage layer
 
-- [Neuvector 2.7.2](https://neuvector.com/) - Kubernetes Security Platform
+- [Neuvector 2.7.6](https://neuvector.com/) - Kubernetes Security Platform
 <!-- END -->
 
 This Project is mainly inspired from [Clemenko/rke_airgap_install](https://github.com/clemenko/rke_airgap_install/) but Shell scripting brings limitations. So Let's rewrite it in Ansible which comes with below benefices: