Explicitly specify http_version as string

[orlovmyk]

Explicitly specify http_version as string, because otherwise it's a number and ignored

Proposed changes

Describe the use case and detail of the change. If this PR addresses an issue on GitHub, make sure to include a link to that issue using one of the supported keywords here in this description (not in the title of the PR).

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• [x] I have read the CONTRIBUTING document.
• [x] I have added Molecule tests that prove my fix is effective or that my feature works.
• [x] I have checked that any relevant Molecule tests pass after adding my changes.
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[orlovmyk]

@alessfg Made requested changes, thx for review

[orlovmyk]

@alessfg don't know why it's failing, errors doesn't have anything with my changes Can you please check?

   RUNNING HANDLER [nginxinc.nginx_config : (Handler - NGINX Config) Print NGINX error if syntax check fails] ***
  fatal: [alpine-3.17]: FAILED! => {
      "config_check['stderr_lines']": [
          "nginx: [warn] duplicate MIME type \"text/html\" in /etc/nginx/conf.d/default.conf:246",
          "nginx: [emerg] \"listen\" directive \"so_keepalive\" parameter is incompatible with \"quic\" in /etc/nginx/conf.d/default.conf:300",
          "nginx: configuration file /etc/nginx/nginx.conf test failed"
      ],
      "failed_when_result": true
  }
  fatal: [debian-bullseye]: FAILED! => {
      "config_check['stderr_lines']": [
          "nginx: [warn] duplicate MIME type \"text/html\" in /etc/nginx/conf.d/default.conf:246",
          "nginx: [emerg] \"listen\" directive \"so_keepalive\" parameter is incompatible with \"quic\" in /etc/nginx/conf.d/default.conf:300",
          "nginx: configuration file /etc/nginx/nginx.conf test failed"
      ],
      "failed_when_result": true
  }
  fatal: [rhel-9]: FAILED! => {
      "config_check['stderr_lines']": [
          "nginx: [warn] duplicate MIME type \"text/html\" in /etc/nginx/conf.d/default.conf:246",
          "nginx: [emerg] \"listen\" directive \"so_keepalive\" parameter is incompatible with \"quic\" in /etc/nginx/conf.d/default.conf:300",
          "nginx: configuration file /etc/nginx/nginx.conf test failed"
      ],
      "failed_when_result": true
  }
  fatal: [ubuntu-jammy]: FAILED! => {
      "config_check['stderr_lines']": [
          "nginx: [warn] duplicate MIME type \"text/html\" in /etc/nginx/conf.d/default.conf:246",
          "nginx: [emerg] \"listen\" directive \"so_keepalive\" parameter is incompatible with \"quic\" in /etc/nginx/conf.d/default.conf:300",
          "nginx: configuration file /etc/nginx/nginx.conf test failed"
      ],
      "failed_when_result": true
  }

[alessfg]

The tests are failing due to a change in the latest nginx release. I'll hopefully have a fix for it sometime next week and then we can test this PR :)

[alessfg]

Quick update -- tests are passing but I want to test a different approach to validating float numbers locally before merging the PR :)