Bump julia-actions/cache from 2 to 3 (#18)

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

Author: dependabot[bot]

.github/workflows/CI.yml

@@ -48,7 +48,7 @@ jobs:
         with:
           version: ${{ matrix.version }}
           arch: ${{ matrix.arch }}
-      - uses: julia-actions/cache@v2
+      - uses: julia-actions/cache@v3
       - uses: julia-actions/julia-buildpkg@v1
       - uses: julia-actions/julia-runtest@v1
 
@@ -81,7 +81,7 @@ jobs:
         with:
           version: '1.12'
           arch: x64
-      - uses: julia-actions/cache@v2
+      - uses: julia-actions/cache@v3
       - uses: julia-actions/julia-buildpkg@v1
 
       - name: Sanity check ChuaCircuit

.github/workflows/msl-test.yml

@@ -73,7 +73,7 @@ jobs:
           arch: x64
 
       - name: Restore Julia package cache
-        uses: julia-actions/cache@v2
+        uses: julia-actions/cache@v3
 
       - name: Build package
         run: |