Update RESTEasy's hashing algorithm

[WhiteCat22]

Describe the bug
RESTEasy uses SHA as it's hashing algorithm. Modern JDK's required SHA-1 at a minimum.

If there is a stack trace, please include the FULL stack trace (without any [internal classes] lines in it). To find the full stack trace, you may need to check in $WLP_OUTPUT_DIR/messages.log

Steps to Reproduce
Steps to reproduce the bug

Expected behavior
A clear and concise description of what you expected to happen.

Diagnostic information:

• OpenLiberty Version: [e.g. 21.0.0.8 - 21.0.0.10]
• Affected feature(s) [e.g. mpHealth-3.0]
• Java Version: [i.e. full output of java -version]
• server.xml configuration (WITHOUT sensitive information like passwords)
• If it would be useful, upload the messages.log file found in $WLP_OUTPUT_DIR/messages.log

Additional context
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