[jdk21u-dev] RFR: 8319124: Update XML Security for Java to 3.0.3 [v3]

[Goetz Lindenmaier]

> I backport this for parity with 21.0.3-oracle.
> 
> The patch applied clean (first commit).
> 
> I removed the strings from SignatureMethod.java as documented in the backport CSR.
> I did not change DOMSignatureMethod.java.
> 
> I skipped the changes to GenerationTest.java. The test passes.
> 
> **Update**: 
> I pushed a new commit that makes the four new test cases work.
> As proposed in the CSR, I use the plain strings instead of the constants defined in SignaturMethod.

Goetz Lindenmaier has updated the pull request incrementally with one additional commit since the last revision:

  Make new test cases work anyways

-------------

Changes:
  - all: https://git.openjdk.org/jdk21u-dev/pull/94/files
  - new: https://git.openjdk.org/jdk21u-dev/pull/94/files/4c01cfa8..619eacc1

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=94&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=94&range=01-02

  Stats: 43 lines in 1 file changed: 42 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/94.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/94/head:pull/94

PR: https://git.openjdk.org/jdk21u-dev/pull/94