fix(ci): Update OpenResty versions

Version 1.17.8.2 does not support the nginx `-e` option to set the
error log. But this option is required by latest `Test::Nginx`.
This version is from 2020 and very old. So drop it.

Check versions at https://github.com/openresty/openresty/tags
and update OpenResty versions to latest patch levels.
Also add 1.27.1.2 and 1.29.2.5.
Do not update 1.19.9.1 to 1.19.9.2 because the Docker image tag is
missing there.

Author: sriemer

.github/workflows/test.yml

@@ -20,10 +20,11 @@ jobs:
     strategy:
       matrix:
         openresty_version:
-          - 1.17.8.2
           - 1.19.9.1
-          - 1.21.4.3
-          - 1.25.3.1
+          - 1.21.4.4
+          - 1.25.3.2
+          - 1.27.1.2
+          - 1.29.2.5
 
     runs-on: ubuntu-latest
     container: