Downgrade SDK, rc2 is failing signing (#14146)

Author: vzarytovskii

global.json

@@ -1,11 +1,11 @@
 {
   "sdk": {
-    "version": "7.0.100-rc.2.22477.23",
+    "version": "7.0.100-rc.1.22431.12",
     "allowPrerelease": true,
     "rollForward": "latestPatch"
   },
   "tools": {
-    "dotnet": "7.0.100-rc.2.22477.23",
+    "dotnet": "7.0.100-rc.1.22431.12",
     "vs": {
       "version": "17.2",
       "components": [