chore: update gapic-generator-java

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PiperOrigin-RevId: 454939894

Source-Link: googleapis/googleapis@519ca44

Source-Link: https://github.com/googleapis/googleapis-gen/commit/fc639d21a7cbc30aa0a9b862586942a0fb46c5c8
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chore: Integrate new gapic-generator-java and rules_gapic
PiperOrigin-RevId: 454027580

Source-Link: googleapis/googleapis@1b22277

Source-Link: https://github.com/googleapis/googleapis-gen/commit/e04cea20d0d12eb5c3bdb360a9e72b654edcb638
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feat: Update Compute Engine API to revision 20220526 (#722)
Source-Link: googleapis/googleapis@950dd73

Source-Link: https://github.com/googleapis/googleapis-gen/commit/57ace178c8543c44627823045917820d67b490c1
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chore(deps): upgrade gapic-generator-java to 2.8.0 and update gax-java to 2.18.1
PiperOrigin-RevId: 450543911

Source-Link: googleapis/googleapis@5528344

Source-Link: https://github.com/googleapis/googleapis-gen/commit/9f6775cab1958982b88967a43e5e806af0f135db
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chore(deps): upgrade gapic-generator-java to 2.7.0 and update gax-java to 2.16.0
PiperOrigin-RevId: 446250659

Source-Link: googleapis/googleapis@dc4ef31

Source-Link: https://github.com/googleapis/googleapis-gen/commit/5fdda4ddfbab87998e77e4a453e0ff87986d2db8
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chore(bazel): update version of Protobuf to v3.20.1
PiperOrigin-RevId: 444328399

Source-Link: googleapis/googleapis@c7ca416

Source-Link: https://github.com/googleapis/googleapis-gen/commit/d61705453a62b3ecda78aa30c192840ebc5a8a90
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fix(compute): revert proto3_optional, required removal on parent_id (#714)
Source-Link: googleapis/googleapis@6b3fdce

Source-Link: https://github.com/googleapis/googleapis-gen/commit/832dbe998878d8619d6b40fe57c6d2cc6e7dc90c
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fix(compute): remove proto3_optional from parent_id (#712)
Source-Link: googleapis/googleapis@fd16b6a

Source-Link: https://github.com/googleapis/googleapis-gen/commit/d935b9847a1b708ab4e696320ba60ce0341c5d7a
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fix(compute): replace missing REQUIRED for parent_id (#711)
Source-Link: googleapis/googleapis@4bb6fd6

Source-Link: https://github.com/googleapis/googleapis-gen/commit/c7d06533be6e2470e36b9f351ae4ff479a47dc53
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