Bump the actions group across 1 directory with 2 updates

Bumps the actions group with 2 updates in the /.github/workflows directory: [actions/checkout](https://github.com/actions/checkout) and [OpenAstronomy/build-python-dist](https://github.com/openastronomy/build-python-dist).


Updates `actions/checkout` from 4.2.2 to 6.0.2
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@11bd719...de0fac2)

Updates `OpenAstronomy/build-python-dist` from 1.1.0 to 1.2.0
- [Release notes](https://github.com/openastronomy/build-python-dist/releases)
- [Commits](OpenAstronomy/build-python-dist@9a4b2bd...541e0aa)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: 6.0.2
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: actions
- dependency-name: OpenAstronomy/build-python-dist
  dependency-version: 1.2.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: actions
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/test_action.yml

@@ -9,9 +9,9 @@ jobs:
     name: Test action
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
       - id: build
-        uses: OpenAstronomy/build-python-dist@9a4b2bd6bda5c48ef3c12b53504ee2263ed032e3  # v1.1.0
+        uses: OpenAstronomy/build-python-dist@541e0aa2abd94d679c4939189fa205597122c948  # v1.2.0
         with:
           pure_python_wheel: true
       - id: upload
@@ -25,9 +25,9 @@ jobs:
     name: Test action (no keep option specified)
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
       - id: build
-        uses: OpenAstronomy/build-python-dist@9a4b2bd6bda5c48ef3c12b53504ee2263ed032e3  # v1.1.0
+        uses: OpenAstronomy/build-python-dist@541e0aa2abd94d679c4939189fa205597122c948  # v1.2.0
         with:
           pure_python_wheel: true
       - id: upload