Fix JDK version checking workflow.

- Adjust regular expression to take into account the new lowest JRE
  version

Signed-off-by: Roland Grunberg <rgrunber@redhat.com>

Author: rgrunber

.github/scripts/check_and_update_jdk.py

@@ -5,7 +5,7 @@
 import json
 import ast
 
-readme_ver_pattern = r'(?:(?<=Supports code from Java 1\.5 to Java )(\d+)|(?<=JavaSE-)~|(?<=path/to/jdk-)~)'  # After resolving current_jdk, we will replace ~
+readme_ver_pattern = r'(?:(?<=Supports code from Java 1\.8 to Java )(\d+)|(?<=JavaSE-)~|(?<=path/to/jdk-)~)'  # After resolving current_jdk, we will replace ~
 
 # Query the Oracle website for the latest JDK version
 response = requests.get('http://javadl-esd-secure.oracle.com/update/baseline.version')