Bump to 1.15.6 + debian 11 (#8)

I have problem with postgresql role and debian 10, so I bump vagrant box to 11 and the problem are gone.

Then, bumping gitea role to 1.15.5 works just fine.

Co-authored-by: meaz <meaz@disroot.org>
Reviewed-on: Disroot-Ansible/gitea#8
Reviewed-by: muppeth <muppeth@no-reply@disroot.org>
Reviewed-by: antilopa <antilopa@no-reply@disroot.org>
Co-authored-by: meaz <meaz@no-reply@disroot.org>
Co-committed-by: meaz <meaz@no-reply@disroot.org>

Vagrantfile

@@ -8,7 +8,7 @@
 Vagrant.configure("2") do |config|
   #config.ssh.insert_key = false
   config.vm.define "gitea" do |gitea|
-    gitea.vm.box = "generic/debian10"
+    gitea.vm.box = "generic/debian11"
     gitea.vm.provider :libvirt do |libvirt|
       libvirt.memory = 256
     end

defaults/main.yml

@@ -5,7 +5,7 @@ gitea_lib_dir: "/var/lib/gitea"
 gitea_user: 'git'
 gitea_group: 'git'
 gitea_confdir: '/etc/gitea/app.ini'
-gitea_version: '1.15.2'
+gitea_version: '1.15.6'
 
 
 #[CONFIG]