use MySQL 8.0.26 to fix failing mysqli tests

Author: mvorisek

.github/workflows/nightly.yml

@@ -613,7 +613,7 @@ jobs:
           ref: ${{ matrix.branch.ref }}
       - name: Setup MySQL
         run: |
-          choco install mysql -y --no-progress --params="/port:3307"
+          choco install mysql --version 8.0.26 -y --no-progress --params="/port:3307"
           mysql.exe --port=3307 --user=root --password="" -e "ALTER USER 'root'@'localhost' IDENTIFIED BY 'mysql_Pass11'; FLUSH PRIVILEGES;"
           mysql.exe --port=3307 --user=root --password="mysql_Pass11" -e "SELECT 1;"
       - name: Setup MSSQL

.github/workflows/push.yml

@@ -159,7 +159,7 @@ jobs:
         uses: actions/checkout@v2
       - name: Setup MySQL
         run: |
-          choco install mysql -y --no-progress --params="/port:3307"
+          choco install mysql --version 8.0.26 -y --no-progress --params="/port:3307"
           mysql.exe --port=3307 --user=root --password="" -e "ALTER USER 'root'@'localhost' IDENTIFIED BY 'mysql_Pass11'; FLUSH PRIVILEGES;"
           mysql.exe --port=3307 --user=root --password="mysql_Pass11" -e "SELECT 1;"
       - name: Setup MSSQL