Update CI to use Ubuntu 22.04 and Fedora 36.

Both have newer gcc and OpenSSL 3.

Fedora 36 runs horribly slow with valgrind enabled so run the valgrind tests on Ubuntu 22.04. Fedora 36 has a newer gcc so it is still worth testing on.

test/Dockerfile

@@ -1,7 +1,7 @@
-# export PGB=pgbackrest;export PGB_IMAGE=$PGB/test:u20-main;PGB_REPO=~/Documents/Code/$PGB
+# export PGB=pgbackrest;export PGB_IMAGE=$PGB/test:u22-main;PGB_REPO=~/Documents/Code/$PGB
 # docker build --squash -f $PGB_REPO/test/Dockerfile -t $PGB_IMAGE .
 # docker run --privileged -itd --name $PGB-test -h $PGB-test -v $PGB_REPO:/home/vagrant/$PGB $PGB_IMAGE
-FROM ubuntu:focal
+FROM ubuntu:jammy
 
 # Install packages
 RUN apt-get update
@@ -19,14 +19,6 @@ RUN curl -fsSL https://get.docker.com | sh
 # Create vagrant user
 RUN adduser --ingroup=docker -uid=5000 --disabled-password --gecos \"\" vagrant
 
-# Build valgrind
-RUN export VALGRIND=valgrind-3.17.0 && \
-    wget -q -O - https://sourceware.org/pub/valgrind/${VALGRIND?}.tar.bz2 | tar jx -C /root && \
-    cd /root/${VALGRIND?} && \
-    ./configure --silent && \
-    make -s -j8 install && \
-    rm -rf /root/${VALGRIND?}
-
 # Configure sudo
 RUN echo '%docker ALL=(ALL) NOPASSWD: ALL' >> /etc/sudoers