Bump conda-incubator/setup-miniconda from 3 to 4

Bumps [conda-incubator/setup-miniconda](https://github.com/conda-incubator/setup-miniconda) from 3 to 4.
- [Release notes](https://github.com/conda-incubator/setup-miniconda/releases)
- [Changelog](https://github.com/conda-incubator/setup-miniconda/blob/main/CHANGELOG.md)
- [Commits](conda-incubator/setup-miniconda@v3...v4)

---
updated-dependencies:
- dependency-name: conda-incubator/setup-miniconda
  dependency-version: '4'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/linux.yml

@@ -339,7 +339,7 @@ jobs:
     if: github.event.pull_request.draft == false
     steps:
     - uses: actions/checkout@v6
-    - uses: conda-incubator/setup-miniconda@v3
+    - uses: conda-incubator/setup-miniconda@v4
       name: Setup conda
       with:
         auto-update-conda: true

.github/workflows/source.yml

@@ -36,7 +36,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
     - uses: actions/checkout@v6
-    - uses: conda-incubator/setup-miniconda@v3
+    - uses: conda-incubator/setup-miniconda@v4
       name: Setup conda
       with:
         auto-update-conda: true