Add upgrading note to README file

Signed-off-by: Carlos Rodríguez Hernández <[email protected]>

bitnami/mysql/README.md

@@ -542,6 +542,10 @@ helm upgrade my-release oci://REGISTRY_NAME/REPOSITORY_NAME/mysql --set auth.roo
 
 | Note: you need to substitute the placeholder _[ROOT_PASSWORD]_ with the value obtained in the installation notes.
 
+### To 11.0.0
+
+This major bump uses mysql `8.4` image, that includes several [removal of deprecated](https://dev.mysql.com/doc/relnotes/mysql/8.4/en/news-8-4-0.html#mysqld-8-4-0-deprecation-removal) configuration settings. This could potentially break your deployment and you would need to adjust the config settings accordingly.
+
 ### To 10.0.0
 
 This major bump changes the following security defaults:
@@ -626,4 +630,4 @@ Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
-limitations under the License.
+limitations under the License.