chore: add xquic back to CI (#2868)

Author: boquan-fang

.github/interop/required.json

@@ -39,7 +39,9 @@
       "client",
       "server"
     ],
-    "xquic": []
+    "xquic": [
+      "server"
+    ]
   },
   "handshake": {
     "aioquic": [
@@ -80,7 +82,9 @@
       "client",
       "server"
     ],
-    "xquic": []
+    "xquic": [
+      "server"
+    ]
   },
   "transfer": {
     "aioquic": [
@@ -162,7 +166,9 @@
       "client",
       "server"
     ],
-    "xquic": []
+    "xquic": [
+      "server"
+    ]
   },
   "chacha20": {
     "aioquic": [
@@ -595,8 +601,7 @@
       "client",
       "server"
     ],
-    "kwik": [
-    ],
+    "kwik": [],
     "lsquic": [
       "client",
       "server"
@@ -629,4 +634,4 @@
     "s2n-quic-rustls": [],
     "xquic": []
   }
-}
+}