Bump actions/cache from 4 to 5 (#42)

Bumps [actions/cache](https://github.com/actions/cache) from 4 to 5.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@v4...v5)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/ci.yaml

@@ -24,7 +24,7 @@ jobs:
         python-version: ${{ matrix.python-version }}
 
     - name: Cache pip
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: ~/.cache/pip
         key: ${{ runner.os }}-${{ matrix.python-version }}-${{ hashFiles('pyproject.toml') }}
@@ -33,7 +33,7 @@ jobs:
 
     - name: Cache / restore SBML test suite
       id: cache-sbml-test-suite
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: sbml-test-suite
         key: ${{ runner.os }}-sbml-test-suite
@@ -71,7 +71,7 @@ jobs:
         python-version: ${{ matrix.python-version }}
 
     - name: Cache pip
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: ~/.cache/pip
         key: ${{ runner.os }}-${{ matrix.python-version }}-${{ hashFiles('pyproject.toml') }}
@@ -80,7 +80,7 @@ jobs:
 
     - name: Cache / restore SBML test suite
       id: cache-sbml-test-suite
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: sbml-test-suite
         key: ${{ runner.os }}-sbml-test-suite
@@ -115,7 +115,7 @@ jobs:
         python-version: ${{ matrix.python-version }}
 
     - name: Cache pip
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: ~/.cache/pip
         key: ${{ runner.os }}-${{ matrix.python-version }}-${{ hashFiles('pyproject.toml') }}
@@ -124,7 +124,7 @@ jobs:
 
     - name: Cache / restore SBML test suite
       id: cache-sbml-test-suite
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: sbml-test-suite
         key: ${{ runner.os }}-sbml-test-suite