Migrated to S3 for tfstate file

versions.tf

@@ -1,7 +1,22 @@
 terraform {
+  backend "s3" {
+    bucket         = "tofu-state-proxmox"
+    endpoint       = "https://eu-central-2.storage.impossibleapi.net"
+    key            = "terraform.tfstate"
+    region         = "eu-central-2"
+    
+    # use_lockfile = true  # ImpossibleCloud doesn't support the required conditional PUT headers
+
+    skip_region_validation      = true
+    skip_credentials_validation = true
+    skip_requesting_account_id  = true
+    skip_s3_checksum            = true
+    use_path_style              = true
+  }
+
   required_providers {
     proxmox = {
-      source = "bpg/proxmox"
+      source  = "bpg/proxmox"
       version = "0.108.0"
     }
   }