Merge branch 'PHP-8.0'

* PHP-8.0:
  Only use travis for cron jobs

Author: nikic

.travis.yml

@@ -70,8 +70,10 @@ jobs:
     include:
         - env: ENABLE_ZTS=0 ENABLE_DEBUG=0
           arch: amd64
+          if: type = cron
         - env: ENABLE_ZTS=1 ENABLE_DEBUG=1
           arch: amd64
+          if: type = cron
         - env: ENABLE_ZTS=1 ENABLE_DEBUG=1 SKIP_IO_CAPTURE_TESTS=1 ARM64=1
           arch: arm64
           if: type = cron