Bump julia-actions/cache from 2 to 3

Bumps [julia-actions/cache](https://github.com/julia-actions/cache) from 2 to 3.
- [Release notes](https://github.com/julia-actions/cache/releases)
- [Commits](julia-actions/cache@v2...v3)

---
updated-dependencies:
- dependency-name: julia-actions/cache
  dependency-version: '3'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/CI.yml

@@ -81,7 +81,7 @@ jobs:
       with:
         arch: ${{ matrix.julia_arch }}
         version: ${{ matrix.julia_version }}
-    - uses: julia-actions/cache@v2
+    - uses: julia-actions/cache@v3
     - uses: julia-actions/julia-buildpkg@v1
     - name: Install matplotlib
       run: sudo apt-get install -y python3-matplotlib
@@ -108,7 +108,7 @@ jobs:
     steps:
       - uses: actions/checkout@v6
       - uses: julia-actions/setup-julia@v3
-      - uses: julia-actions/cache@v2
+      - uses: julia-actions/cache@v3
       - uses: julia-actions/julia-buildpkg@v1
 
       - uses: julia-actions/julia-docdeploy@v1

.github/workflows/setup-test.yml

@@ -18,7 +18,7 @@ jobs:
       - uses: julia-actions/setup-julia@v3
         with:
           version: '1'
-      - uses: julia-actions/cache@v2
+      - uses: julia-actions/cache@v3
       - name: Install xvfb for headless GLMakie
         run: sudo apt-get update && sudo apt-get install -y xvfb
       - name: Run setup tests