Fix regex in GLIBC version extraction for improved accuracy

Author: anubhavkrishna1

.github/workflows/build-glibc236.yml

@@ -27,7 +27,7 @@ jobs:
         echo "RELEASE_TAG=python-${{ github.event.inputs.python_version }}-linux-glibc236" >> $GITHUB_ENV
         echo "BUILD_DATE=$(date +'%Y-%m-%d')" >> $GITHUB_ENV
         echo "ARCHITECTURE=$(uname -m)" >> $GITHUB_ENV
-        echo "GLIBC_VERSION=$(ldd --version | head -n1 | grep -o '[0-9]\+\.[0-9]\+')" >> $GITHUB_ENV
+        echo "GLIBC_VERSION=$(ldd --version | head -n1 | grep -oE '[0-9]+\.[0-9]+' | head -n1)" >> $GITHUB_ENV
         
     - name: Install build dependencies
       run: |