ci: increase S2 job count

tools/ci/config/target-test.yml

@@ -495,7 +495,7 @@ UT_034:
 
 UT_035:
   extends: .unit_test_s2_template
-  parallel: 31
+  parallel: 32
   tags:
     - ESP32S2_IDF
     - UT_T1_1