build(deps): Bump actions/cache from 3 to 4 (#454)

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

.github/workflows/code-checking.yml

@@ -26,7 +26,7 @@ jobs:
           profile: minimal
           components: rustfmt,clippy
 
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         with:
           path: |
             ~/.cargo/bin/

.github/workflows/example-axum.yml

@@ -40,7 +40,7 @@ jobs:
           toolchain: stable
           profile: minimal
 
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         with:
           path: |
             ~/.cargo/bin/

.github/workflows/example-demo.yml

@@ -33,7 +33,7 @@ jobs:
           registry-url: "https://registry.npmjs.org"
       - name: install wasm-pack
         run: curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         with:
           path: |
             ~/.cargo/bin/

.github/workflows/mrml-cli-main.yml

@@ -39,7 +39,7 @@ jobs:
           toolchain: stable
           profile: minimal
 
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         with:
           path: |
             ~/.cargo/bin/
@@ -70,7 +70,7 @@ jobs:
           toolchain: stable
           profile: minimal
 
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         with:
           path: |
             ~/.cargo/bin/

.github/workflows/mrml-core-main.yml

@@ -45,7 +45,7 @@ jobs:
           profile: minimal
 
       - name: prepare cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: |
             ~/.cargo/bin/

.github/workflows/mrml-wasm-main.yml

@@ -52,7 +52,7 @@ jobs:
       - name: install wasm-pack
         run: curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh
 
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         with:
           path: |
             ~/.cargo/bin/

.github/workflows/mrml-wasm-release.yml

@@ -56,7 +56,7 @@ jobs:
       - name: install wasm-pack
         run: curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh
 
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         with:
           path: |
             ~/.cargo/bin/