chore(deps): update fluxcd/flux2 action to v2.3.0 (#674)

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [fluxcd/flux2](https://togithub.com/fluxcd/flux2) | action | minor |
`v2.2.3` -> `v2.3.0` |

---

### Release Notes

<details>
<summary>fluxcd/flux2 (fluxcd/flux2)</summary>

###
[`v2.3.0`](https://togithub.com/fluxcd/flux2/compare/v2.2.3...v2.3.0)

[Compare
Source](https://togithub.com/fluxcd/flux2/compare/v2.2.3...v2.3.0)

</details>

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.github/workflows/flux-local-diff.yaml

@@ -29,7 +29,7 @@ jobs:
     - name: Checkout
       uses: actions/checkout@v4
     - name: Setup Flux CLI
-      uses: fluxcd/flux2/action@v2.2.3
+      uses: fluxcd/flux2/action@v2.3.0
     - uses: ./action/diff
       id: diff
       with:

.github/workflows/flux-local-test.yaml

@@ -25,7 +25,7 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - name: Setup Flux CLI
-      uses: fluxcd/flux2/action@v2.2.3
+      uses: fluxcd/flux2/action@v2.3.0
     - uses: ./action/test
       with:
         enable-helm: true

.github/workflows/test.yaml

@@ -20,7 +20,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Setup Flux CLI
-        uses: fluxcd/flux2/action@v2.2.3
+        uses: fluxcd/flux2/action@v2.3.0
       - uses: supplypike/setup-bin@v4
         with:
           uri: https://github.com/kyverno/kyverno/releases/download/v1.11.3/kyverno-cli_v1.11.3_linux_x86_64.tar.gz