Add current release candidate to test matrix

Author: scotttrinh

.github/workflows/tests.yml

@@ -16,14 +16,18 @@ jobs:
     continue-on-error: ${{ matrix.gel-version == 'nightly' }}
     strategy:
       matrix:
-        node-version: ["20", "22", "23"]
+        node-version: ["20", "22", "24"]
         os: [ubuntu-latest]
         gel-version: ["stable"]
         include:
           # Nightly server
           - os: ubuntu-latest
             node-version: "22"
             gel-version: "nightly"
+          # Release Candidate server
+          - os: ubuntu-latest
+            node-version: "22"
+            gel-version: "7.0-rc3"
           # LTS server
           - os: ubuntu-latest
             node-version: "22"