chore(deps): update embarkstudios/cargo-deny-action action to v2 (#279)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
|
[EmbarkStudios/cargo-deny-action](https://redirect.github.com/EmbarkStudios/cargo-deny-action)
| action | major | `v1` -> `v2` |

---

### Release Notes

<details>
<summary>EmbarkStudios/cargo-deny-action
(EmbarkStudios/cargo-deny-action)</summary>

###
[`v2`](https://redirect.github.com/EmbarkStudios/cargo-deny-action/compare/v1...v2)

[Compare
Source](https://redirect.github.com/EmbarkStudios/cargo-deny-action/compare/v1...v2)

</details>

---

### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined),
Automerge - At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you
are satisfied.

♻ **Rebasing**: Never, or you tick the rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
again.

---

- [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check
this box

---

This PR was generated by [Mend Renovate](https://mend.io/renovate/).
View the [repository job
log](https://developer.mend.io/github/rustic-rs/rustic_core).

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.github/workflows/audit.yml

@@ -46,7 +46,7 @@ jobs:
     steps:
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4
 
-      - uses: EmbarkStudios/cargo-deny-action@3f4a782664881cf5725d0ffd23969fcce89fd868 # v1
+      - uses: EmbarkStudios/cargo-deny-action@8371184bd11e21dcf8ac82ebf8c9c9f74ebf7268 # v2
         with:
           command: check bans licenses sources