[9.18] rem: ci: Drop Ubuntu 20.04 Focal Fossa

Focal-specific ./configure options were moved to Jammy.

Backport of MR !9899

Merge branch 'backport-mnowak/drop-ubuntu-focal-9.18' into 'bind-9.18'

See merge request isc-projects/bind9!10456

.gitlab-ci.yml

@@ -225,10 +225,6 @@ stages:
 
 # Ubuntu
 
-.ubuntu-focal-amd64: &ubuntu_focal_amd64_image
-  image: "$CI_REGISTRY_IMAGE:ubuntu-focal-amd64"
-  <<: *linux_amd64
-
 .ubuntu-jammy-amd64: &ubuntu_jammy_amd64_image
   image: "$CI_REGISTRY_IMAGE:ubuntu-jammy-amd64"
   <<: *linux_amd64
@@ -1117,39 +1113,13 @@ unit:gcc:tumbleweed:amd64:
     - job: gcc:tumbleweed:amd64
       artifacts: true
 
-# Jobs for regular GCC builds on Ubuntu 20.04 Focal Fossa (amd64)
-
-gcc:focal:amd64:
-  variables:
-    CC: gcc
-    CFLAGS: "${CFLAGS_COMMON} -Og"
-    EXTRA_CONFIGURE: "--disable-geoip --with-libidn2 --disable-doh"
-  <<: *ubuntu_focal_amd64_image
-  <<: *build_job
-
-system:gcc:focal:amd64:
-  <<: *ubuntu_focal_amd64_image
-  <<: *system_test_job
-  <<: *api_pipelines_schedules_tags_triggers_web_triggering_rules
-  needs:
-    - job: gcc:focal:amd64
-      artifacts: true
-
-unit:gcc:focal:amd64:
-  <<: *ubuntu_focal_amd64_image
-  <<: *unit_test_job
-  <<: *api_pipelines_schedules_tags_triggers_web_triggering_rules
-  needs:
-    - job: gcc:focal:amd64
-      artifacts: true
-
 # Jobs for regular GCC builds on Ubuntu 22.04 Jammy Jellyfish (amd64)
 
 gcc:jammy:amd64:
   variables:
     CC: gcc
     CFLAGS: "${CFLAGS_COMMON} -O2"
-    EXTRA_CONFIGURE: "--with-libidn2 --disable-dnstap --without-cmocka --without-gssapi"
+    EXTRA_CONFIGURE: "--with-libidn2 --disable-dnstap --without-cmocka --without-gssapi --disable-geoip --disable-doh"
   <<: *ubuntu_jammy_amd64_image
   <<: *build_job
 

doc/arm/platforms.inc.rst

@@ -46,7 +46,7 @@ Current versions of BIND 9 are fully supported and regularly tested on the
 following systems:
 
 -  Debian 12
--  Ubuntu LTS 20.04, 22.04, 24.04
+-  Ubuntu LTS 22.04, 24.04
 -  Fedora 42
 -  Red Hat Enterprise Linux / CentOS / Oracle Linux 8, 9
 -  FreeBSD 13.4, 14.2
@@ -89,13 +89,12 @@ supported platforms.
 
 -  Platforms past or close to their respective EOL dates, such as:
 
-   -  Ubuntu 14.04, 16.04 (Ubuntu ESM releases are not supported)
+   -  Ubuntu 14.04, 16.04, 18.04, 20.04 (Ubuntu ESM releases are not supported)
    -  CentOS 6
    -  Debian 8 Jessie, 9 Stretch, 10 Buster, 11 Bullseye
-   -  Ubuntu 14.04, 16.04, 18.04 (Ubuntu ESM releases are not supported)
    -  Red Hat Enterprise Linux / CentOS / Oracle Linux 6, 7
    -  Debian 8 Jessie, 9 Stretch, 10 Buster
-   -  FreeBSD 10.x, 11.x
+   -  FreeBSD 10.x, 11.x, 12.x
 
 -  Less common CPU architectures (i386, i686, mips, mipsel, sparc, ppc, and others)