build: remove rust 1.67 for Android requirement

Signed-off-by: Berend Sliedrecht <sliedrecht@berend.io>

.github/workflows/build.yml

@@ -399,8 +399,6 @@ jobs:
   build-android:
     name: Build library (Android)
     needs: [checks]
-    env:
-      RUST_VERSION: "1.67"
 
     runs-on: ubuntu-latest
 
@@ -431,7 +429,7 @@ jobs:
 
       - name: Build
         run: |
-          cargo install --bins --git https://github.com/rust-embedded/cross --tag v${{ env.CROSS_VERSION }} cross
+          cargo install cross --version 0.2.5 
           # Required for compatibility with manylinux2014:
           # https://github.com/briansmith/ring/issues/1728
           if [ "${{ matrix.target }}" = "aarch64-linux-android" ]; then