Bump actions/cache from 3 to 4

Bumps [actions/cache](https://github.com/actions/cache) from 3 to 4.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@v3...v4)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/conda-package.yml

@@ -21,7 +21,7 @@ jobs:
         run: |
           echo "pkgs_dirs: [~/.conda/pkgs]" >> ~/.condarc
       - name: Cache conda packages
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         env:
           CACHE_NUMBER: 0  # Increase to reset cache
         with:
@@ -93,7 +93,7 @@ jobs:
         run: |
           echo "pkgs_dirs: [~/.conda/pkgs]" >> ~/.condarc
       - name: Cache conda packages
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         env:
           CACHE_NUMBER: 0  # Increase to reset cache
         with:
@@ -136,7 +136,7 @@ jobs:
           python-version: ${{ matrix.python }}
 
       - name: Cache conda packages
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         env:
           CACHE_NUMBER: 3  # Increase to reset cache
         with:
@@ -215,7 +215,7 @@ jobs:
         shell: pwsh
         run: Get-Content -Path .\lockfile
       - name: Cache conda packages
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         env:
           CACHE_NUMBER: 0  # Increase to reset cache
         with: