Upgrade to GCC-11 for improved C++20 support including concepts

Author: zoptiks

.github/workflows/biogears-complete-pipeline.yml

@@ -110,8 +110,8 @@ jobs:
             echo "# Install newer compiler with C++20 support" >> docker/modified/Dockerfile.builder
             echo "RUN apt-get update && apt-get install -y software-properties-common" >> docker/modified/Dockerfile.builder
             echo "RUN add-apt-repository ppa:ubuntu-toolchain-r/test -y" >> docker/modified/Dockerfile.builder
-            echo "RUN apt-get update && apt-get install -y gcc-10 g++-10" >> docker/modified/Dockerfile.builder
-            echo "RUN update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-10 100 --slave /usr/bin/g++ g++ /usr/bin/g++-10" >> docker/modified/Dockerfile.builder
+            echo "RUN apt-get update && apt-get install -y gcc-11 g++-11" >> docker/modified/Dockerfile.builder
+            echo "RUN update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-11 100 --slave /usr/bin/g++ g++ /usr/bin/g++-11" >> docker/modified/Dockerfile.builder
             echo "RUN gcc --version && g++ --version" >> docker/modified/Dockerfile.builder
             
             # Configure CMake with comprehensive C++20 support
@@ -162,8 +162,8 @@ jobs:
             echo "# Install newer compiler with C++20 support" >> docker/modified/Dockerfile.builder
             echo "RUN apt-get update && apt-get install -y software-properties-common" >> docker/modified/Dockerfile.builder
             echo "RUN add-apt-repository ppa:ubuntu-toolchain-r/test -y" >> docker/modified/Dockerfile.builder
-            echo "RUN apt-get update && apt-get install -y gcc-10 g++-10" >> docker/modified/Dockerfile.builder
-            echo "RUN update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-10 100 --slave /usr/bin/g++ g++ /usr/bin/g++-10" >> docker/modified/Dockerfile.builder
+            echo "RUN apt-get update && apt-get install -y gcc-11 g++-11" >> docker/modified/Dockerfile.builder
+            echo "RUN update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-11 100 --slave /usr/bin/g++ g++ /usr/bin/g++-11" >> docker/modified/Dockerfile.builder
             echo "RUN gcc --version && g++ --version" >> docker/modified/Dockerfile.builder
             
             # Configure CMake with comprehensive C++20 support