Update mysql:8.4 Docker digest to 679e7e9

Author: renovate[bot]

example/otel-collector/docker-compose.yaml

@@ -13,7 +13,7 @@
 # limitations under the License.
 services:
   mysql:
-    image: mysql:8.4@sha256:0f775a92980b41c87c58f934a204de80431dd4d854057160ec1cb936663eabe9
+    image: mysql:8.4@sha256:679e7e924f38a3cbb62a3d7df32924b83f7321a602d3f9f967c01b3df18495d6
     environment:
       - MYSQL_ROOT_PASSWORD=otel_password
       - MYSQL_DATABASE=db

example/stdout/docker-compose.yml

@@ -13,7 +13,7 @@
 # limitations under the License.
 services:
   mysql:
-    image: mysql:8.4@sha256:0f775a92980b41c87c58f934a204de80431dd4d854057160ec1cb936663eabe9
+    image: mysql:8.4@sha256:679e7e924f38a3cbb62a3d7df32924b83f7321a602d3f9f967c01b3df18495d6
     ports:
       - 3306:3306
     environment: