[jdk17u] RFR: 8276130: Fix Github Actions of JDK17u to account for update version scheme

[Christoph Langer]

With the release of 17.0.1, the version number of jdk17u now does not only contain the feature part but also interim and update. This fix will unbreak github actions.

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Commit messages:
 - Fix JDK_VERSION in GHA

Changes: https://git.openjdk.java.net/jdk17u/pull/218/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk17u&pr=218&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8276130
  Stats: 10 lines in 1 file changed: 0 ins; 0 del; 10 mod
  Patch: https://git.openjdk.java.net/jdk17u/pull/218.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk17u pull/218/head:pull/218

PR: https://git.openjdk.java.net/jdk17u/pull/218