fix(pbs): Use correct colon separator for PBS API token auth

This resolves authentication issues (401/403 errors) when connecting to Proxmox Backup Server instances by using the correct colon separator (:) instead of an equals sign (=) between the token ID and secret in the Authorization header, as required by the PBS API.

Also bumps version to 3.1.5.

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "pulse",
-  "version": "3.1.4",
+  "version": "3.1.5",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "pulse",
-      "version": "3.1.4",
+      "version": "3.1.5",
       "license": "MIT",
       "dependencies": {
         "concurrently": "^8.2.2"
@@ -2006,7 +2006,7 @@
       }
     },
     "node_modules/pulse": {
-      "version": "3.1.4",
+      "version": "3.1.5",
       "resolved": ".",
       "license": "MIT",
       "dependencies": {

package.json

@@ -1,6 +1,6 @@
 {
   "name": "pulse",
-  "version": "3.1.4",
+  "version": "3.1.5",
   "description": "A lightweight monitoring application for Proxmox VE.",
   "main": "server/index.js",
   "scripts": {