deps: update actions/setup-python action to v5 (#76)

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [actions/setup-python](https://togithub.com/actions/setup-python) |
action | major | `v4` -> `v5` |

---

### Release Notes

<details>
<summary>actions/setup-python (actions/setup-python)</summary>

### [`v5`](https://togithub.com/actions/setup-python/compare/v4...v5)

[Compare
Source](https://togithub.com/actions/setup-python/compare/v4...v5)

</details>

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.github/workflows/release.yml

@@ -14,7 +14,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Set up Python
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: 3.x
 

.github/workflows/test.yml

@@ -18,7 +18,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Setup python
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
 
@@ -54,7 +54,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Setup python
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}