chore: update github actions (#1361) (#745)

* chore: update github actions

* chore: update
Source-Link: https://github.com/googleapis/synthtool/commit/1622741e6877d4b335b137ac7e07f7f32d4e5af7
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-java:latest@sha256:e3746f84955528d0fe24bf2e4df89875d6ce5a036af01b9c326d61a38838523a
4 files changed
tree: c03bd55a8547c19a587a7411a6d0c785f3ae50b9
  1. java-core/