Bump CPython 3.8.19 → 3.8.20

Author: mayeut

docker/Dockerfile

@@ -116,7 +116,7 @@ RUN manylinux-entrypoint /build_scripts/build-cpython.sh 3.7.17
 
 FROM build_cpython AS build_cpython38
 COPY build_scripts/ambv-pubkey.txt /build_scripts/cpython-pubkeys.txt
-RUN manylinux-entrypoint /build_scripts/build-cpython.sh 3.8.19
+RUN manylinux-entrypoint /build_scripts/build-cpython.sh 3.8.20
 
 FROM build_cpython AS build_cpython39
 COPY build_scripts/ambv-pubkey.txt /build_scripts/cpython-pubkeys.txt