fix: downgrade GCC from 13.2 to 12.3 for C++

Author: theoludwig

templates/docker/cpp/Dockerfile

@@ -1,9 +1,9 @@
-FROM gcc:13.2.0-bookworm AS builder
+FROM gcc:12.3.0-bullseye AS builder
 WORKDIR /usr/src/application
 COPY ./ ./
 RUN g++ ./*.cpp* -o solution -Wall -Wextra -Wfloat-equal -Wundef -Werror -std=c++17 -pedantic -pedantic-errors -O3
 
-FROM gcr.io/distroless/cc-debian12:latest AS runner
+FROM gcr.io/distroless/cc-debian11:latest AS runner
 WORKDIR /usr/src/application
 COPY --from=builder /usr/src/application/solution ./
 CMD ["./solution"]