ci(deps): update netbox dependencies (#300)

| datasource | package                | from   | to     |
| ---------- | ---------------------- | ------ | ------ |
| docker     | netboxcommunity/netbox | v4.2.7 | v4.2.8 |

Co-authored-by: graphops-renovate[bot] <135047802+graphops-renovate[bot]@users.noreply.github.com>

Author: graphops-renovate[bot]

dockerfiles/netbox/Dockerfile

@@ -1,5 +1,5 @@
 # renovate: datasource=docker depName=netboxcommunity/netbox
-ARG NETBOX_VERSION="v4.2.7"
+ARG NETBOX_VERSION="v4.2.8"
 
 FROM netboxcommunity/netbox:${NETBOX_VERSION}@sha256:6cb789ac9d800a5d0eb435dd3ffc7706cc5ef238db9bf8b3af9f02ef7b79af48