implemented contains

.github/workflows/ci.yml

@@ -21,7 +21,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Rust compilation prerequisites (Ubuntu)
-        if: ${{ matrix.os }} === "ubuntu-latest"
+        if: contains("ubuntu", ${{ matrix.os }})
         run: |
           sudo apt update
           sudo apt install -y \
@@ -30,12 +30,12 @@ jobs:
           rustup component add rustfmt clippy rust-src
 
       - name: Install Cargo (MacOS)
-        if: ${{ matrix.os }} === "macos-lates"
+        if: contains("macos", ${{ matrix.os }})
         run: curl https://sh.rustup.rs -sSf | sh
 
       # We've run into out-of-disk error when compiling Polkadot in the next step, so we free up some space this way.
       - name: Free Disk Space (Ubuntu)
-        if: ${{ matrix.os }} === "ubuntu-latest"
+        if: contains("ubuntu", ${{ matrix.os }})
         uses: jlumbroso/free-disk-space@54081f138730dfa15788a46383842cd2f914a1be # 1.3.1
         with:
           android: true # This alone is a 12 GB save.