ci: fix mariadb path (#8815)

Ref: forgejo/forgejo#8810
https://hub.docker.com/_/mariadb#where-to-store-data

Signed-off-by: viceice <michael.kriese@gmx.de>
Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/8815
Reviewed-by: Gusted <gusted@noreply.codeberg.org>
Co-authored-by: viceice <michael.kriese@gmx.de>
Co-committed-by: viceice <michael.kriese@gmx.de>

.forgejo/workflows/testing-integration.yml

@@ -83,7 +83,7 @@ jobs:
         env:
           MARIADB_ALLOW_EMPTY_ROOT_PASSWORD: yes
           MARIADB_DATABASE: testgitea
-        options: --tmpfs /mariadb/data:noatime
+        options: --tmpfs /var/lib/mysql:noatime
     steps:
       - uses: https://data.forgejo.org/actions/checkout@v4
       - uses: ./.forgejo/workflows-composite/setup-env