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] <[email protected]>

.github/workflows/test-linux-build.yml

@@ -29,15 +29,15 @@ jobs:
       ### libcasm-global ###
       - name: restore libcasm-global cache
         id: cache-libcasm-global-restore
-        uses: actions/cache/restore@v3
+        uses: actions/cache/restore@v4
         with:
           path: CASMcode_global/dist
           key: ${{ runner.os }}-libcasm-global-v2-0-3
 
       ### libcasm-xtal ###
       - name: restore libcasm-xtal cache
         id: cache-libcasm-xtal-restore
-        uses: actions/cache/restore@v3
+        uses: actions/cache/restore@v4
         with:
           path: CASMcode_crystallography/dist
           key: ${{ runner.os }}-libcasm-xtal-v2-0a8

.github/workflows/test-linux-cxx-only.yml

@@ -29,15 +29,15 @@ jobs:
       ### libcasm-global ###
       - name: restore libcasm-global cache
         id: cache-libcasm-global-restore
-        uses: actions/cache/restore@v3
+        uses: actions/cache/restore@v4
         with:
           path: CASMcode_global/dist
           key: ${{ runner.os }}-libcasm-global-v2-0-3
 
       ### libcasm-xtal ###
       - name: restore libcasm-xtal cache
         id: cache-libcasm-xtal-restore
-        uses: actions/cache/restore@v3
+        uses: actions/cache/restore@v4
         with:
           path: CASMcode_crystallography/dist
           key: ${{ runner.os }}-libcasm-xtal-v2-0a8

.github/workflows/test-linux-dependencies.yml

@@ -21,7 +21,7 @@ jobs:
       ### libcasm-global ###
       - name: restore libcasm-global cache
         id: cache-libcasm-global-restore
-        uses: actions/cache/restore@v3
+        uses: actions/cache/restore@v4
         with:
           path: CASMcode_global/dist
           key: ${{ runner.os }}-libcasm-global-v2-0-3
@@ -47,15 +47,15 @@ jobs:
 
       - name: save libcasm-global cache
         id: cache-libcasm-global-save
-        uses: actions/cache/save@v3
+        uses: actions/cache/save@v4
         with:
           path: CASMcode_global/dist
           key: ${{ steps.cache-libcasm-global-restore.outputs.cache-primary-key }}
 
       ### libcasm-xtal ###
       - name: restore libcasm-xtal cache
         id: cache-libcasm-xtal-restore
-        uses: actions/cache/restore@v3
+        uses: actions/cache/restore@v4
         with:
           path: CASMcode_crystallography/dist
           key: ${{ runner.os }}-libcasm-xtal-v2-0a8
@@ -81,7 +81,7 @@ jobs:
 
       - name: save libcasm-xtal cache
         id: cache-libcasm-xtal-save
-        uses: actions/cache/save@v3
+        uses: actions/cache/save@v4
         with:
           path: CASMcode_crystallography/dist
           key: ${{ steps.cache-libcasm-xtal-restore.outputs.cache-primary-key }}

.github/workflows/test-linux.yml

@@ -29,15 +29,15 @@ jobs:
       ### libcasm-global ###
       - name: restore libcasm-global cache
         id: cache-libcasm-global-restore
-        uses: actions/cache/restore@v3
+        uses: actions/cache/restore@v4
         with:
           path: CASMcode_global/dist
           key: ${{ runner.os }}-libcasm-global-v2-0-3
 
       ### libcasm-xtal ###
       - name: restore libcasm-xtal cache
         id: cache-libcasm-xtal-restore
-        uses: actions/cache/restore@v3
+        uses: actions/cache/restore@v4
         with:
           path: CASMcode_crystallography/dist
           key: ${{ runner.os }}-libcasm-xtal-v2-0a8