MDL-76408 gha: Move "highest" runs from php81 to php82

Note that, for windows php82, we need to have the php-zip extension
explicitly added. So we are adding it too.

From the manual:
  "As of PHP 8.2.0, php_zip.dll DLL must be enabled in php.ini.
  Previously, this extension was built-in."

.github/workflows/push.yml

@@ -9,7 +9,7 @@ on:
       - v[0-9]+.[0-9]+.[0-9]+*
 
 env:
-  php: 8.1
+  php: 8.2
 
 jobs:
   Grunt:
@@ -61,7 +61,7 @@ jobs:
             db: mysqli
           # PostgreSQL builds always run with the highest PHP supported version.
           - os: ubuntu-22.04
-            php: 8.1
+            php: 8.2
             db: pgsql
 
     steps:

.github/workflows/windows.yml

@@ -3,7 +3,7 @@ name: Windows Testing
 on:
   workflow_dispatch
 env:
-  php: 8.1
+  php: 8.2
 
 jobs:
   Grunt:
@@ -46,13 +46,13 @@ jobs:
       matrix:
         include:
           - os: windows-latest
-            php: 8.1
+            php: 8.2
             # Ideally we should use mysql/mariadb, but they are 4x slower without tweaks and configuration
             # so let's run only postgres (1.5h vs 6h) only, If some day we want to improve the mysql runs,
             # this is the place to enable them.
             # db: mysqli
             db: pgsql
-            extensions: exif, fileinfo, gd, intl, pgsql, mysql, redis, soap, sodium
+            extensions: exif, fileinfo, gd, intl, pgsql, mysql, redis, soap, sodium, zip
           - os: windows-latest
             php: 8.0
             db: pgsql