zabbix_template: Fix encode error occurs when using Python2

[sky-joker]

SUMMARY

This PR is to fix encode error occurs when using Python2.
fixes: #233

ISSUE TYPE

• Bugfix Pull Request

COMPONENT NAME

changelogs/fragments/297-zabbix_template_modules.yml
plugins/modules/zabbix_template.py
plugins/modules/zabbix_template_info.py

ADDITIONAL INFORMATION

[codecov]

Codecov Report

Merging #297 (3036118) into main (93cccb0) will increase coverage by 0.05%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main     #297      +/-   ##
==========================================
+ Coverage   77.12%   77.17%   +0.05%     
==========================================
  Files          19       19              
  Lines        2675     2681       +6     
  Branches      685      687       +2     
==========================================
+ Hits         2063     2069       +6     
  Misses        409      409              
  Partials      203      203              

Impacted Files	Coverage Δ
...ommunity/zabbix/plugins/modules/zabbix_template.py	76.56% <0.00%> (+0.27%)	⬆️
...ity/zabbix/plugins/modules/zabbix_template_info.py	80.95% <0.00%> (+0.95%)	⬆️

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[D3DeFi]

LGTM

[sky-joker]

Thank you @D3DeFi for reviewing.
I fixed your pointed out.