Update ubuntu 21.10 docker containers to 22.04

Ubuntu 22.10 is EOL.

Author: Amanieu

ci/docker/aarch64-unknown-linux-gnu/Dockerfile

@@ -1,4 +1,4 @@
-FROM ubuntu:21.10
+FROM ubuntu:22.04
 RUN apt-get update && apt-get install -y --no-install-recommends \
   gcc \
   g++ \

ci/docker/armv7-unknown-linux-gnueabihf/Dockerfile

@@ -1,4 +1,4 @@
-FROM ubuntu:21.10
+FROM ubuntu:22.04
 RUN apt-get update && apt-get install -y --no-install-recommends \
   gcc \
   g++ \

ci/docker/riscv64gc-unknown-linux-gnu/Dockerfile

@@ -1,4 +1,4 @@
-FROM ubuntu:21.10
+FROM ubuntu:22.04
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
         gcc libc6-dev qemu-user ca-certificates \