Update mysql:8.4 Docker digest to ca48cb4

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:ca48cb49cefd64b6fd062c38719061922c2f79332669d9b86f91480b982778ae
     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:ca48cb49cefd64b6fd062c38719061922c2f79332669d9b86f91480b982778ae
     ports:
       - 3306:3306
     environment: