Update GraalVM download links and remove ValueAnchorNode usage

[mikepapadim]

Description

Updated GraalVM download links to point to the newer version, jdk-21.0.2. Removed the handling of ValueAnchorNode class in the ExceptionSuppression.java, as it was noted to no longer be necessary.

Problem description

There is no backwards compatibility with GraalVM 21.0.1 due to refactoring on ValueAnchorNode

Backend/s tested

Mark the backends affected by this PR.

• [x] OpenCL
• [x] PTX
• [x] SPIRV

OS tested

Mark the OS where this PR is tested.

• [x] Linux
• [ ] OSx
• [ ] Windows

Did you check on FPGAs?

If it is applicable, check your changes on FPGAs.

• [ ] Yes
• [x] No

How to test the new patch?

make graal-jdk-21
make tests

Provide instructions about how to test the new patch.

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[jjfumero]

Thanks @mikepapadim , We will update this PR once the latest JDK updates the GraalVM JIT compiler.

[mikepapadim]

Closed in favor of an updated one.