chore(deps): update mysql docker tag to v8.3 (#260)

renovate[bot] · web-flow · commit 8bee13214433 · 2024-05-01T00:02:28.000+09:00
Co-authored-by: renovate[bot] &lt;29139614+renovate[bot]@users.noreply.github.com&gt;
diff --git a/README.md b/README.md
@@ -95,7 +95,7 @@ http://localhost
 ### db container
 
 - Base image
-  - [mysql](https://hub.docker.com/_/mysql):8.0
+  - [mysql](https://hub.docker.com/_/mysql):8.3
 
 ### mailpit container
 
diff --git a/infra/docker/mysql/Dockerfile b/infra/docker/mysql/Dockerfile
@@ -1,4 +1,4 @@
-FROM mysql:8.0
+FROM mysql:8.3
 
 ENV TZ=UTC
 
