ci(semaphore): use f1-standard-2 and Ubuntu 22.04

e1-standard-2 can sit indefinitely on org quota; F1 is the current
generation for Semaphore Cloud Linux agents. Pair with ubuntu2204
per supported OS images.

Co-authored-by: Eric Guo <eric@cloud-mes.com>

Author: cursoragent

.semaphore/semaphore.yml

@@ -3,8 +3,8 @@ version: v1.0
 name: wechat gems
 agent:
   machine:
-    type: e1-standard-2
-    os_image: ubuntu2004
+    type: f1-standard-2
+    os_image: ubuntu2204
 blocks:
   - name: Test
     task: