chore(deps): update sigstore/cosign-installer action to v2.8.1 (#450)

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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 | `v2.5.1` -> `v2.8.1` |

---

### Release Notes

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

###
[`v2.8.1`](https://togithub.com/sigstore/cosign-installer/releases/tag/v2.8.1)

[Compare
Source](https://togithub.com/sigstore/cosign-installer/compare/v2.8.0...v2.8.1)

#### What's Changed

- bump cosign install to use release v1.13.1 by
[@&#8203;cpanato](https://togithub.com/cpanato) in
[sigstore/cosign-installer#98

**Full Changelog**:
sigstore/cosign-installer@v2...v2.8.1

###
[`v2.8.0`](https://togithub.com/sigstore/cosign-installer/releases/tag/v2.8.0)

[Compare
Source](https://togithub.com/sigstore/cosign-installer/compare/v2.7.0...v2.8.0)

#### What's Changed

- bump cosign to v1.13.0 by
[@&#8203;cpanato](https://togithub.com/cpanato) in
[sigstore/cosign-installer#95

**Full Changelog**:
sigstore/cosign-installer@v2.7.0...v2.8.0

###
[`v2.7.0`](https://togithub.com/sigstore/cosign-installer/releases/tag/v2.7.0)

[Compare
Source](https://togithub.com/sigstore/cosign-installer/compare/v2.6.0...v2.7.0)

#### What's Changed

- bump cosign to v1.12.1 by
[@&#8203;cpanato](https://togithub.com/cpanato) in
[sigstore/cosign-installer#94

**Full Changelog**:
sigstore/cosign-installer@v2...v2.7.0

###
[`v2.6.0`](https://togithub.com/sigstore/cosign-installer/releases/tag/v2.6.0)

[Compare
Source](https://togithub.com/sigstore/cosign-installer/compare/v2.5.1...v2.6.0)

#### What's Changed

- update action to default cosign to v1.11.0 release by
[@&#8203;cpanato](https://togithub.com/cpanato) in
[sigstore/cosign-installer#89
- cleanup dependabot by [@&#8203;cpanato](https://togithub.com/cpanato)
in
[sigstore/cosign-installer#90
- default cosign to v1.11.1 by
[@&#8203;cpanato](https://togithub.com/cpanato) in
[sigstore/cosign-installer#91
- Bump actions/setup-go from 3.2.1 to 3.3.0 by
[@&#8203;dependabot](https://togithub.com/dependabot) in
[sigstore/cosign-installer#92

**Full Changelog**:
sigstore/cosign-installer@v2.5.1...v2.6.0

</details>

---

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---

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---

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.github/workflows/publish-console-docker.yaml

@@ -41,7 +41,7 @@ jobs:
         uses: docker/setup-buildx-action@v2
       - 
         name: Install Cosign
-        uses: sigstore/cosign-installer@v2.5.1
+        uses: sigstore/cosign-installer@v2.8.1
         # Only sign the container if this is a release tag
         if: ${{ startsWith(github.ref, 'refs/tags/v') }}
       -

.github/workflows/publish-graphql-docker.yaml

@@ -41,7 +41,7 @@ jobs:
         uses: docker/setup-buildx-action@v2
       - 
         name: Install Cosign
-        uses: sigstore/cosign-installer@v2.5.1
+        uses: sigstore/cosign-installer@v2.8.1
         # Only sign the container if this is a release tag
         if: ${{ startsWith(github.ref, 'refs/tags/v') }}
       -

.github/workflows/publish-worker-docker.yaml

@@ -41,7 +41,7 @@ jobs:
         uses: docker/setup-buildx-action@v2
       - 
         name: Install Cosign
-        uses: sigstore/cosign-installer@v2.5.1
+        uses: sigstore/cosign-installer@v2.8.1
         # Only sign the container if this is a release tag
         if: ${{ startsWith(github.ref, 'refs/tags/v') }}
       -