Bump version to 1.7.3

dist/index.js

@@ -1297,13 +1297,20 @@ class Command {
         let cmdStr = CMD_STRING + this.command;
         if (this.properties && Object.keys(this.properties).length > 0) {
             cmdStr += ' ';
+            let first = true;
             for (const key in this.properties) {
                 if (this.properties.hasOwnProperty(key)) {
                     const val = this.properties[key];
                     if (val) {
+                        if (first) {
+                            first = false;
+                        }
+                        else {
+                            cmdStr += ',';
+                        }
                         // safely append the val - avoid blowing up when attempting to
                         // call .replace() if message is not a string for some reason
-                        cmdStr += `${key}=${escape(`${val || ''}`)},`;
+                        cmdStr += `${key}=${escape(`${val || ''}`)}`;
                     }
                 }
             }

package.json

@@ -1,6 +1,6 @@
 {
   "name": "setup-php",
-  "version": "1.7.2",
+  "version": "1.7.3",
   "private": false,
   "description": "Setup PHP for use with GitHub Actions",
   "main": "dist/index.js",