fix: working mysql tests in actions, running ci in prs just once

Author: BenKnigge

.github/workflows/test.yaml

@@ -27,7 +27,7 @@ jobs:
       mysql:
         image: mysql
         ports:
-          - 3306:3306
+          - 33306:3306
         env:
           MYSQL_USER: mysql
           MYSQL_DATABASE: sqlxtest
@@ -41,7 +41,7 @@ jobs:
 
     steps:
       - name: "Checkout Code"
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: "Install Golang"
         uses: actions/setup-go@v4
@@ -59,7 +59,7 @@ jobs:
       - name: "Run Tests"
         env:
           SQLX_POSTGRES_DSN: "postgres://postgres:postgres@127.0.0.1:5432/sqlxtest?sslmode=disable"
-          SQLX_MYSQL_DSN: ""
+          SQLX_MYSQL_DSN: "root:mysql@tcp(127.0.0.1:33306)/sqlxtest?parseTime=true"
           SQLX_SQLITE_DSN: "./sqlxtest.sqlite"
         run: |
           gotestsum --format testname ./...