MDL-69308 github actions: Bump min PHP requirement to 7.3

diff --git a/.github/workflows/push.yml b/.github/workflows/push.yml
index f063803..35fd4a7 100644 (file)
--- a/.github/workflows/push.yml
+++ b/.github/workflows/push.yml
@@ -48,7 +48,7 @@ jobs:
       matrix:
         include:
           - os: ubuntu-18.04
-            php: 7.2
+            php: 7.3
             db: mysqli
           - os: ubuntu-18.04
             php: 7.4