Update minimum requirements for WordPress (and PHP). Fix test matrix.

.github/workflows/pr-unit-tests.yml

@@ -10,17 +10,16 @@ jobs:
       fail-fast: false
       matrix:
         # We test against the earliest and latest PHP versions for each major supported version.
-        php: [ '5.6', '7.0', '7.4', '8.0', '8.1', '8.2' ]
-        wp: [ '6.2', '6.3', 'latest', 'nightly' ]
+        php: [ '7.0', '7.4', '8.0', '8.1', '8.2' ]
+        wp: [ '6.3', '6.4', '6.5', 'latest', 'nightly' ]
         multisite: [ '0', '1' ]
         exclude:
-          # WordPress 6.3+ requires PHP 7.0+
-          - php: 5.6
-            wp: 6.3
-          - php: 5.6
+          # WordPress 6.6+ requires PHP 7.2+
+          - php: 7.0
             wp: latest
-          - php: 5.6
+          - php: 7.0
             wp: nightly
+
     services:
       database:
         image: mysql:5.6

readme.txt

@@ -3,9 +3,9 @@ Contributors: Automattic, wpmuguru, claudiosanches, peterfabian1000, vedjain, ja
 Tags: scheduler, cron
 Stable tag: 3.7.4
 License: GPLv3
-Requires at least: 6.2
+Requires at least: 6.3
 Tested up to: 6.5
-Requires PHP: 5.6
+Requires PHP: 7.0
 
 Action Scheduler - Job Queue for WordPress