fix(ci): fix branch wildcard syntax

.github/workflows/run_api_tests.yaml

@@ -7,7 +7,7 @@ concurrency:
 on:
   push:
     branch:
-      - *
+      - '*'
     tags:
       - e*
       - v*

.github/workflows/run_broker_tests.yaml

@@ -3,7 +3,7 @@ name: Broker tests
 on:
   push:
     branch:
-      - *
+      - '*'
     tags:
       - v*
   pull_request:

.github/workflows/run_emqx_app_tests.yaml

@@ -3,7 +3,7 @@ name: Check emqx app standalone
 on:
   push:
     branch:
-      - *
+      - '*'
     tags:
       - v*
       - e*

.github/workflows/run_fvt_tests.yaml

@@ -7,7 +7,7 @@ concurrency:
 on:
   push:
     branch:
-      - *
+      - '*'
     tags:
       - v*
   pull_request:

.github/workflows/run_relup_tests.yaml

@@ -7,7 +7,7 @@ concurrency:
 on:
   push:
     branch:
-      - *
+      - '*'
     tags:
       - v*
       - e*

.github/workflows/run_test_cases.yaml

@@ -7,7 +7,7 @@ concurrency:
 on:
   push:
     branch:
-      - *
+      - '*'
     tags:
       - v*
       - e*