Fix swift version check accordingly

Author: dabrahams

.github/workflows/build-and-test.yml

@@ -248,7 +248,8 @@ jobs:
           tag: ${{ env.swift-version }}-RELEASE
 
       - name: Verify swift version
-        run: swift --version && swift --version | grep -q ${{ env.swift-version }}
+        # temporarily hardcoding a check for 5.10 since we need env.swift-version='5.10.0'
+        run: swift --version && swift --version | grep -q '5\.10' # ${{ env.swift-version }}
         shell: bash
 
       - name: Set up latest CMake and Ninja