Bump julia-actions/cache from 1 to 2 (#256)

Bumps [julia-actions/cache](https://github.com/julia-actions/cache) from 1 to 2.
- [Release notes](https://github.com/julia-actions/cache/releases)
- [Commits](julia-actions/cache@v1...v2)

---
updated-dependencies:
- dependency-name: julia-actions/cache
  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>

.github/workflows/actions.yml

@@ -21,7 +21,7 @@ jobs:
           version: ${{ matrix.julia-version }}
           arch: ${{ matrix.julia-arch }}
       - name: "Load cache"
-        uses: julia-actions/cache@v1
+        uses: julia-actions/cache@v2
       - name: "Build"
         uses: julia-actions/julia-buildpkg@v1
       - name: "Run tests"

.github/workflows/allocations.yml

@@ -21,7 +21,7 @@ jobs:
         with:
           version: ${{ matrix.julia-version }}
           arch: ${{ matrix.julia-arch }}
-      - uses: julia-actions/cache@v1
+      - uses: julia-actions/cache@v2
       - name: "Run test"
         run: |
           julia --project=@. -e "using Pkg; Pkg.instantiate(); Pkg.build()"

.github/workflows/benchmark.yml

@@ -13,7 +13,7 @@ jobs:
       - uses: julia-actions/setup-julia@v2
         with:
           version: 1
-      - uses: julia-actions/cache@v1
+      - uses: julia-actions/cache@v2
       - uses: julia-actions/julia-buildpkg@v1
       - name: Install dependencies
         run: julia -e 'using Pkg; pkg"add PkgBenchmark BenchmarkTools BenchmarkCI@0.1"'

.github/workflows/docs.yml

@@ -16,7 +16,7 @@ jobs:
       - uses: julia-actions/setup-julia@v2
         with:
           version: '1'
-      - uses: julia-actions/cache@v1
+      - uses: julia-actions/cache@v2
       - name: Install dependencies
         run: |
           export JULIA_PROJECT=@.