chore(deps): update sigstore/cosign-installer action to v3.4.0 (#39)

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
|
[sigstore/cosign-installer](https://togithub.com/sigstore/cosign-installer)
| action | minor | `v3.3.0` -> `v3.4.0` |

---

### Release Notes

<details>
<summary>sigstore/cosign-installer (sigstore/cosign-installer)</summary>

###
[`v3.4.0`](https://togithub.com/sigstore/cosign-installer/releases/tag/v3.4.0)

[Compare
Source](https://togithub.com/sigstore/cosign-installer/compare/v3.3.0...v3.4.0)

#### What's Changed

- Use examples that work with multiple tags by
[@&#8203;jkreileder](https://togithub.com/jkreileder) in
[sigstore/cosign-installer#155
- default cosign install to release v2.2.3 by
[@&#8203;cpanato](https://togithub.com/cpanato) in
[sigstore/cosign-installer#156

#### New Contributors

- [@&#8203;jkreileder](https://togithub.com/jkreileder) made their first
contribution in
[sigstore/cosign-installer#155

**Full Changelog**:
sigstore/cosign-installer@v3...v3.4.0

</details>

---

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.github/workflows/build.yml

@@ -57,7 +57,7 @@ jobs:
         uses: actions/checkout@v4
 
       # Confirm that cosign.pub matches SIGNING_SECRET
-      - uses: sigstore/cosign-installer@v3.3.0
+      - uses: sigstore/cosign-installer@v3.4.0
         if: github.event_name != 'pull_request' && github.ref == 'refs/heads/live'
 
       - name: Check COSIGN_PRIVATE_KEY matches cosign.pub
@@ -218,7 +218,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
 
       # Sign container
-      - uses: sigstore/cosign-installer@v3.3.0
+      - uses: sigstore/cosign-installer@v3.4.0
         if: github.event_name != 'pull_request' && github.ref == 'refs/heads/live'
 
       - name: Sign container image