Switch CI to Ubuntu 20.04

Switch CI tasks currently running on Ubuntu 18.04 to 20.04 and
also switch some tasks that dont require specific version because
they run in docker containers to use ubuntu-latest instead.
All tasks switched to ubuntu-latest are expected to be ubuntu-version
agnostic because they run their actions in docker containers.

.github/workflows/alpine-32bit-build-and-test.yaml

@@ -10,7 +10,7 @@ on:
 jobs:
   regress_linux_32bit:
     name: PG${{ matrix.pg }} ${{ matrix.build_type }} linux-i386
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     container:
       image: i386/postgres:${{ matrix.pg }}-alpine
       env:

.github/workflows/apt-packages.yaml

@@ -11,7 +11,7 @@ on:
 jobs:
   apt_tests:
     name: APT ${{ matrix.image }} PG${{ matrix.pg }}
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     container:
       image: ${{ matrix.image }}
       env:

.github/workflows/code_style.yaml

@@ -12,7 +12,7 @@ on:
 jobs:
   misc_checks:
     name: Check formatting, license and git hooks
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-20.04
     strategy:
       fail-fast: false
     steps:

.github/workflows/coverity.yaml

@@ -14,7 +14,7 @@ jobs:
       fail-fast: false
       matrix:
         pg: ["12.6", "13.2"]
-        os: [ubuntu-18.04]
+        os: [ubuntu-20.04]
     env:
       PG_SRC_DIR: pgbuild
       PG_INSTALL_DIR: postgresql

.github/workflows/cron-tests.yaml

@@ -9,7 +9,7 @@ on:
 jobs:
   abi_breakage:
     name: ABI Breakage PG${{ matrix.pg }}
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     strategy:
       fail-fast: false
       matrix:
@@ -35,7 +35,7 @@ jobs:
 
   sanitizer:
     name: ASAN and UBSAN
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     strategy:
       fail-fast: false
 
@@ -49,7 +49,7 @@ jobs:
 
   memory_leak:
     name: Memory leak on insert
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     strategy:
       fail-fast: false
     env:
@@ -65,21 +65,13 @@ jobs:
 
   backup_and_restore:
     name: Backup and restore
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     strategy:
       fail-fast: false
       matrix:
         pg: [11, 12, 13]
-        include:
-          - pg: 11
-            pg_minor_compile: 0
-          - pg: 12
-            pg_minor_compile: 0
-          - pg: 13
-            pg_minor_compile: 2
     env:
       PG_MAJOR: ${{ matrix.pg }}
-      PG_MINOR_COMPILE: ${{ matrix.pg_minor_compile }}
       PG_VERSION: ${{ matrix.pg }}
 
     steps:

.github/workflows/rpm-packages.yaml

@@ -11,7 +11,7 @@ on:
 jobs:
   rpm_tests:
     name: RPM ${{ matrix.image }} PG${{ matrix.pg }}
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     container:
       image: ${{ matrix.image }}
     strategy:

.github/workflows/update-test.yaml

@@ -10,7 +10,7 @@ on:
 jobs:
   update_test:
     name: Update test PG${{ matrix.pg }}
-    runs-on: 'ubuntu-18.04'
+    runs-on: 'ubuntu-latest'
     strategy:
       matrix:
         pg: ["11.11","12.6","13.2"]

scripts/gh_matrix_builder.py

@@ -51,7 +51,7 @@ def build_debug_config(overrides):
     "coverage": True,
     "llvm_config": "llvm-config-9",
     "clang": "clang-9",
-    "os": "ubuntu-18.04",
+    "os": "ubuntu-20.04",
     "cc": "gcc",
     "cxx": "g++",
   })