chore(deps): update falco chart to v6.4.0 (defenseunicorns#2010)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [falco](https://falco.org)
([source](https://redirect.github.com/falcosecurity/charts)) | minor |
`6.3.0` -> `6.4.0` |

---

### Release Notes

<details>
<summary>falcosecurity/charts (falco)</summary>

###
[`v6.4.0`](https://redirect.github.com/falcosecurity/charts/releases/tag/falco-6.4.0)

[Compare
Source](https://redirect.github.com/falcosecurity/charts/compare/falco-6.3.0...falco-6.4.0)

Falco

#### What's Changed

- chore(deps): Bump docker/login-action from 3.5.0 to 3.6.0 by
[@&#8203;dependabot](https://redirect.github.com/dependabot)\[bot] in
[#&#8203;914](https://redirect.github.com/falcosecurity/charts/pull/914)
- Fli/metric service dual stack by
[@&#8203;Xartos](https://redirect.github.com/Xartos) in
[#&#8203;885](https://redirect.github.com/falcosecurity/charts/pull/885)

#### New Contributors

- [@&#8203;Xartos](https://redirect.github.com/Xartos) made their first
contribution in
[#&#8203;885](https://redirect.github.com/falcosecurity/charts/pull/885)

**Full Changelog**:
<falcosecurity/charts@falco-6.3.0...falco-6.4.0>

</details>

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src/falco/common/zarf.yaml

@@ -20,7 +20,7 @@ components:
           - ../chart/values.yaml
       - name: falco
         url: https://falcosecurity.github.io/charts
-        version: 6.3.0
+        version: 6.4.0
         namespace: falco
         valuesFiles:
           - ../values/values.yaml