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] <support@github.com>

.github/workflows/rust.yml

@@ -53,7 +53,7 @@ jobs:
           rust-version: stable
 
       - name: Cache Cargo
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: |
             ~/.cargo/bin/
@@ -431,7 +431,7 @@ jobs:
   #         rustup default stable
   #         rustup component add rustfmt clippy
   #     - name: Cache Cargo
-  #       uses: actions/cache@v3
+  #       uses: actions/cache@v4
   #       with:
   #         path: /home/runner/.cargo
   #         # this key is not equal because the user is different than on a container (runner vs github)