Update dependency juju/juju to v3.6.2 (#370)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [juju/juju](https://redirect.github.com/juju/juju) | patch | `3.6.1`
-> `3.6.2` |

---

### Release Notes

<details>
<summary>juju/juju (juju/juju)</summary>

###
[`v3.6.2`](https://redirect.github.com/juju/juju/releases/tag/v3.6.2):
Juju 3.6.2

[Compare
Source](https://redirect.github.com/juju/juju/compare/v3.6.1...v3.6.2)

##### The Juju team is proud to release Juju 3.6.2!

This is a point release to the stable 3.6 series of Juju.

Checkout the [Juju 3.6.2 Release
Notes](https://discourse.charmhub.io/t/roadmap-releases/5064)

</details>

---

### Configuration

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weekday" in timezone Etc/UTC, Automerge - At any time (no schedule
defined).

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

♻ **Rebasing**: Whenever PR becomes conflicted, 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

---

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.github/workflows/ci.yaml

@@ -81,13 +81,13 @@ jobs:
           - agent: 2.9.51  # renovate: juju-agent-pin-minor
             libjuju: ^2
             allure_on_amd64: false
-          - agent: 3.6.1  # renovate: juju-agent-pin-minor
+          - agent: 3.6.2  # renovate: juju-agent-pin-minor
             allure_on_amd64: true
         architecture:
           - amd64
         include:
           - juju:
-              agent: 3.6.1  # renovate: juju-agent-pin-minor
+              agent: 3.6.2  # renovate: juju-agent-pin-minor
               allure_on_amd64: true
             architecture: arm64
     name: Integration | ${{ matrix.juju.agent }} | ${{ matrix.architecture }}