Updated Forge updateChecker.json to include 1.17.1

forge/src/main/resources/updateChecker.json

@@ -1,5 +1,8 @@
 {
   "homepage": "https://modrinth.com/mod/speedometer/versions",
+  "1.17.1": {
+    "6.2.4": "Backport by request from issue #3"
+  },
   "1.20.6": {
     "1.0": "First version",
     "2.0": "Made the speedometer text movable, added debug data display, added visual speedometer",
@@ -104,6 +107,9 @@
     "1.20.1-recommended": "5.2",
     
     "1.20-latest": "5.2",
-    "1.20-recommended": "5.2"
+    "1.20-recommended": "5.2",
+
+    "1.17.1-latest": "6.2.4",
+    "1.17.1-recommended": "6.2.4"
   }
 }