chore(deps): bump github.com/vishvananda/netns to 0.0.4

[mmorel-35]

Checklist prior to review

• Link to relevant issue as well as docs and UI issues -- It doesn't apply - just a dependency update
• This will not break child repos: it doesn't hardcode values (.e.g "kumahq" as a image registry) and it will work on Windows, system specific functions like syscall.Mkfifo have equivalent implementation on the other OS -- It doesn't apply - just a dependency update
• Tests (Unit test, E2E tests, manual test on universal and k8s) -- It doesn't apply - just a dependency update
• Do you need to update UPGRADE.md? -- It doesn't apply - just a dependency update
• Does it need to be backported according to the backporting policy? -- it doesn't
• Do you need to explicitly set a > Changelog: entry here or add a ci/ label to run fewer/more tests?

[bartsmykla]

Let's wait for the full matrix of tests to pass (just to be sure), and we can merge it :-)