Bump actions/cache from 4 to 5 (#705)

Author: dependabot[bot]

.github/workflows/opencv-rust.yml

@@ -45,7 +45,7 @@ jobs:
       - uses: dtolnay/rust-toolchain@stable
       - uses: mozilla-actions/[email protected]
 
-      - uses: actions/cache@v4
+      - uses: actions/cache@v5
         with:
           path: ~/build
           key: build-${{ matrix.opencv-version }}-${{ matrix.linkage }}-${{ matrix.os-image }}
@@ -90,7 +90,7 @@ jobs:
       - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@stable
       - uses: mozilla-actions/[email protected]
-      - uses: actions/cache@v4
+      - uses: actions/cache@v5
         with:
           path: ~/build
           key: vcpkg-${{ matrix.vcpkg-version }}-${{ matrix.os-image }}-${{ matrix.vcpkg-features-cache-key }}
@@ -161,7 +161,7 @@ jobs:
       - uses: actions/checkout@v5
       - uses: mozilla-actions/[email protected]
 
-      - uses: actions/cache@v4
+      - uses: actions/cache@v5
         with:
           path: ~/build
           key: build-${{ env.OPENCV_VERSION }}-dynamic-ubuntu-24.04