[monitoring-plugin-perl] travis: update perl versions

[Sven Nierlein]

 Module: monitoring-plugin-perl
 Branch: master
 Commit: f1e3e739775d5781553c207f856b618df9467a85
 Author: Sven Nierlein <sven at nierlein.de>
   Date: Wed Sep  9 14:12:48 2020 +0200
    URL: https://www.monitoring-plugins.org/repositories/monitoring-plugin-perl/commit/?id=f1e3e73

travis: update perl versions

---

 .travis.yml | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 8f40b00..1955525 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,13 +1,14 @@
 language: perl
 perl:
+  - "5.30"
+  - "5.28"
+  - "5.26"
+  - "5.24"
   - "5.22"
   - "5.20"
   - "5.18"
   - "5.16"
   - "5.14"
-  - "5.12"
-  - "5.10"
-  - "5.8"
 
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