Bump actions/cache from 3 to 4 (#19)

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

.github/workflows/ci.yml

@@ -89,7 +89,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Cache cargo build and registry
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: |
             ~/.cargo/registry
@@ -129,7 +129,7 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - name: Cache cargo build and registry
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: |
           ~/.cargo/registry
@@ -144,7 +144,7 @@ jobs:
     - name: Install cargo-hack
       run: cargo install cargo-hack
     - name: Cache ~/.cargo
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: ~/.cargo
         key: ${{ runner.os }}-coverage-dotcargo
@@ -163,7 +163,7 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - name: Cache cargo build and registry
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: |
           ~/.cargo/registry
@@ -178,7 +178,7 @@ jobs:
     - name: Install cargo-hack
       run: cargo install cargo-hack
     - name: Cache ~/.cargo
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: ~/.cargo
         key: ${{ runner.os }}-coverage-dotcargo
@@ -202,7 +202,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Cache cargo build and registry
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: |
             ~/.cargo/registry
@@ -266,7 +266,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Cache cargo build and registry
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: |
             ~/.cargo/registry
@@ -323,7 +323,7 @@ jobs:
   #   steps:
   #     - uses: actions/checkout@v4
   #     - name: Cache cargo build and registry
-  #       uses: actions/cache@v3
+  #       uses: actions/cache@v4
   #       with:
   #         path: |
   #           ~/.cargo/registry
@@ -345,7 +345,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Cache cargo build and registry
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: |
             ~/.cargo/registry
@@ -380,7 +380,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Cache cargo build and registry
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: |
             ~/.cargo/registry
@@ -421,12 +421,12 @@ jobs:
           crate: cargo-tarpaulin
           version: latest
       - name: Cache ~/.cargo
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ~/.cargo
           key: ${{ runner.os }}-coverage-dotcargo
       - name: Cache cargo build
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: target
           key: ${{ runner.os }}-coverage-cargo-build-target