[lworld] RFR: GH workflow syntax

[David Simms]

type-restrictions still triggered

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Commit messages:
 - Syntax 5

Changes: https://git.openjdk.java.net/valhalla/pull/253/files
 Webrev: https://webrevs.openjdk.java.net/?repo=valhalla&pr=253&range=00
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/valhalla/pull/253.diff
  Fetch: git fetch https://git.openjdk.java.net/valhalla pull/253/head:pull/253

PR: https://git.openjdk.java.net/valhalla/pull/253