Remove mysql insecure warning in CI (#91739)

## About The Pull Request


![image](https://github.com/user-attachments/assets/e8007e11-fc54-4f31-905e-2249481cd0a0)

This warning thing has been annoying me for a while when I scour CI logs
looking for oranges/reds, let's remove this needless emission by
confabulating a `.cfg` file and using that to run any necessary
commands. This worked on my local repository and should pass CI without
any issues on this repo as well.
## Why It's Good For The Game

In case we really wanna start cracking down on failing due to warnings
in CI it's helpful to ensure that the standard case is normal. Also just
cleaner in general.
## Changelog
Not needed.

.github/workflows/run_integration_tests.yml

@@ -41,12 +41,15 @@ jobs:
           name: build-artifact-${{ inputs.major || env.BYOND_MAJOR }}-${{ inputs.minor || env.BYOND_MINOR}}
           path: ./
       - name: Setup database
+        env:
+          MYSQL_CONFIG_FILE: tools/ci/mysql_config.cnf
         run: |
           sudo systemctl start mysql
-          mysql -u root -proot -e 'CREATE DATABASE tg_ci;'
-          mysql -u root -proot tg_ci < SQL/tgstation_schema.sql
-          mysql -u root -proot -e 'CREATE DATABASE tg_ci_prefixed;'
-          mysql -u root -proot tg_ci_prefixed < SQL/tgstation_schema_prefixed.sql
+          mysql --defaults-extra-file=${{ env.MYSQL_CONFIG_FILE }} -e 'CREATE DATABASE tg_ci;'
+          mysql --defaults-extra-file=${{ env.MYSQL_CONFIG_FILE }} tg_ci < SQL/tgstation_schema.sql
+          mysql --defaults-extra-file=${{ env.MYSQL_CONFIG_FILE }} -e 'CREATE DATABASE tg_ci_prefixed;'
+          mysql --defaults-extra-file=${{ env.MYSQL_CONFIG_FILE }} tg_ci_prefixed < SQL/tgstation_schema_prefixed.sql
+          echo "Sucessful MySQL Database Setup"
       - name: Install rust-g
         run: |
           bash tools/ci/install_rust_g.sh

tools/ci/mysql_config.cnf

@@ -0,0 +1,3 @@
+[client]
+user = "root"
+password = "root"