Update Travis Ubuntu version and add recent Perl releases

diff --git a/.travis.yml b/.travis.yml
index 559ffad..797a757 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,8 +1,12 @@
 sudo: false
 language: perl
+dist: focal
 perl:
   - "blead"
   - "dev"
+  - "5.32"
+  - "5.30"
+  - "5.28"
   - "5.26"
   - "5.24"
   - "5.22"