opal-ci: Drop fedora35, add fedora37

Fedora 35 has reached end-of-life. Remove it and add Fedora 37.
Reviewed-by: Dan Horák <dan@danny.cz>
Signed-off-by: Reza Arbab <arbab@linux.ibm.com>

.github/workflows/docker-builds-checks.yml

@@ -12,7 +12,7 @@ jobs:
       fail-fast: false
 
       matrix:
-        os: [ ubuntu-18.04, ubuntu-20.04, ubuntu-22.04, ubuntu-rolling, centos7, fedora35, fedora36, fedora-rawhide, docs ]
+        os: [ ubuntu-18.04, ubuntu-20.04, ubuntu-22.04, ubuntu-rolling, centos7, fedora36, fedora37, fedora-rawhide, docs ]
 
     steps:
       - uses: actions/checkout@v2

opal-ci/Dockerfile-docs

-Dockerfile-fedora35
\ No newline at end of file
+Dockerfile-fedora36
\ No newline at end of file

opal-ci/Dockerfile-fedora35 → opal-ci/Dockerfile-fedora37

-FROM fedora:35
+FROM fedora:37
 RUN dnf -y update
 RUN dnf -y install --allowerasing wget curl xterm gcc git xz make diffutils findutils expect valgrind valgrind-devel ccache dtc openssl openssl-devel gcc-powerpc64-linux-gnu mbedtls-devel which qemu-system-ppc
 # for building documentation and the coverage report