Update CI configuration: add beta Rust version to the matrix and remove coverage job

Author: arjunkomath

.github/workflows/ci.yml

@@ -17,6 +17,7 @@ jobs:
       matrix:
         rust:
           - stable
+          - beta
     steps:
     - uses: actions/checkout@v4
 
@@ -59,26 +60,6 @@ jobs:
     - name: Build examples
       run: cargo build --examples --verbose
 
-  coverage:
-    name: Coverage
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v4
-    
-    - name: Install Rust
-      uses: dtolnay/rust-toolchain@stable
-    
-    - name: Install cargo-tarpaulin
-      uses: taiki-e/install-action@cargo-tarpaulin
-    
-    - name: Generate code coverage
-      run: cargo tarpaulin --verbose --all-features --workspace --timeout 120 --out xml
-    
-    - name: Upload to codecov.io
-      uses: codecov/codecov-action@v3
-      with:
-        file: cobertura.xml
-        fail_ci_if_error: true
 
   security:
     name: Security audit