Run the SDK live tests against SDK main

The live tests are on SDK main since bitwarden/sdk-internal#1709, and the branch this pointed at was closed unmerged. Its vitest needs Node 22.12 or newer.

.github/workflows/sdk-live-tests.yml

@@ -9,7 +9,7 @@ on:
       sdk_ref:
         description: "Branch, tag or commit of bitwarden/sdk-internal to test with"
         required: true
-        default: "km/live-server-integration-tests"
+        default: "main"
 
 defaults:
   run:
@@ -49,7 +49,7 @@ jobs:
       - name: "Setup Node"
         uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0
         with:
-          node-version: 20
+          node-version: 22
 
       - name: "Install binaryen"
         run: npm i -g binaryen@132.0.0