Update github-actions (#58)

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
|
[actions/download-artifact](https://togithub.com/actions/download-artifact)
| action | major | `v3` -> `v4` |
| [codecov/codecov-action](https://togithub.com/codecov/codecov-action)
| action | major | `v3` -> `v4` |
|
[hynek/build-and-inspect-python-package](https://togithub.com/hynek/build-and-inspect-python-package)
| action | major | `v1` -> `v2` |

---

### Release Notes

<details>
<summary>actions/download-artifact (actions/download-artifact)</summary>

###
[`v4`](https://togithub.com/actions/download-artifact/compare/v3...v4)

[Compare
Source](https://togithub.com/actions/download-artifact/compare/v3...v4)

</details>

<details>
<summary>codecov/codecov-action (codecov/codecov-action)</summary>

### [`v4`](https://togithub.com/codecov/codecov-action/compare/v3...v4)

[Compare
Source](https://togithub.com/codecov/codecov-action/compare/v3...v4)

</details>

<details>
<summary>hynek/build-and-inspect-python-package
(hynek/build-and-inspect-python-package)</summary>

###
[`v2`](https://togithub.com/hynek/build-and-inspect-python-package/compare/v1...v2)

[Compare
Source](https://togithub.com/hynek/build-and-inspect-python-package/compare/v1...v2)

</details>

---

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are satisfied.

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---

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this box

---

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.github/workflows/deploy.yml

@@ -25,7 +25,7 @@ jobs:
         with:
           fetch-depth: 0
 
-      - uses: hynek/build-and-inspect-python-package@v1
+      - uses: hynek/build-and-inspect-python-package@v2
 
   # Upload to Test PyPI on every commit on main.
   release-test-pypi:
@@ -42,7 +42,7 @@ jobs:
 
     steps:
       - name: Download packages built by build-and-inspect-python-package
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: Packages
           path: dist
@@ -66,7 +66,7 @@ jobs:
 
     steps:
       - name: Download packages built by build-and-inspect-python-package
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: Packages
           path: dist

.github/workflows/test.yml

@@ -44,7 +44,7 @@ jobs:
           tox -e cog
 
       - name: Upload coverage
-        uses: codecov/codecov-action@v3
+        uses: codecov/codecov-action@v4
         with:
           flags: ${{ matrix.os }}
           name: ${{ matrix.os }} Python ${{ matrix.python-version }}