RFR: 8268637: Update --release 17 symbol information for JDK 17 build 28

[Iris Clark]

On Wed, 30 Jun 2021 16:54:57 GMT, Joe Darcy <darcy at openjdk.org> wrote:

> JDK 17 b28 had two fixes which updated the symbol information. A CallerSensitive annotation was removed as part of JDK-8268349 and API changes in JDK-8268888.
> 
> These should be reflected in the JDK 18 symbol information for 17.

Marked as reviewed by iris (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/4641