[23.11] ci: switch to Ubuntu 22.04 in GHA

[David Marchand]

Ubuntu 20.04 images have been removed from GHA.
See https://github.com/actions/runner-images/issues/11101.

Signed-off-by: David Marchand <david.marchand at redhat.com>
---
 .github/workflows/build.yml | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 056b15c2fd..d0b0d5472a 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -36,37 +36,37 @@ jobs:
       fail-fast: false
       matrix:
         config:
-          - os: ubuntu-20.04
+          - os: ubuntu-22.04
             compiler: gcc
             mini: mini
-          - os: ubuntu-20.04
+          - os: ubuntu-22.04
             compiler: gcc
             checks: stdatomic
-          - os: ubuntu-20.04
+          - os: ubuntu-22.04
             compiler: clang
             checks: stdatomic
-          - os: ubuntu-20.04
+          - os: ubuntu-22.04
             compiler: gcc
             checks: debug+doc+examples+tests
-          - os: ubuntu-20.04
+          - os: ubuntu-22.04
             compiler: clang
             checks: asan+doc+tests
-          - os: ubuntu-20.04
+          - os: ubuntu-22.04
             compiler: gcc
             library: static
             cross: i386
-          - os: ubuntu-20.04
+          - os: ubuntu-22.04
             compiler: gcc
             library: static
             cross: mingw
-          - os: ubuntu-20.04
+          - os: ubuntu-22.04
             compiler: gcc
             library: shared
             cross: aarch64
-          - os: ubuntu-20.04
+          - os: ubuntu-22.04
             compiler: gcc
             cross: ppc64le
-          - os: ubuntu-20.04
+          - os: ubuntu-22.04
             compiler: gcc
             cross: riscv64
 
-- 
2.53.0