Remove GRPC dependency

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
io.grpc:grpc-stub	1.45.0 -> 1.45.4
io.grpc:grpc-protobuf	1.45.0 -> 1.45.4

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Release Notes

grpc/grpc-java

v1.45.4

Bug Fixes

• core: Free unused MessageProducer in RetriableStream (https://github.com/grpc/grpc-java/pull/9853)

v1.45.3

Bug Fixes

• core: Fix retry causing memory leak for canceled RPCs. (#​9360)

v1.45.2

Bug Fixes

• xds: fix bugs in ring-hash load balancer picking subchannel behavior per gRFC. The bug may cause connection not failing over from TRANSIENT_FAILURE status. (#​9085)
• xds: Protect xdstp processing with federation env var. If the xds server uses xdstp:// resource names it was possible for federation code paths to be entered even without enabling the experimental federation support. This is now fixed and it is safe for xds servers to use xdstp:// resource names. (#​9190)

Behavior Changes

• xds: change ring_hash LB aggregation rule to better handle transient_failure channel status (#​9084)

Dependencies

• Bump protobuf to 3.19.6
• bom: Exclude grpc-observability. The module does not exist in 1.45.x. Should be a noop (#​9122)

v1.45.1

Bug Fixes

• netty: Fixed incompatibility with Netty 4.1.75.Final that caused COMPRESSION_ERROR (#​9004)
• xds: Fix LBs blindly propagating control plane errors (#​9012). This change forces the use of UNAVAILABLE for any xDS communication failures, which otherwise could greatly confuse an application. This is essentially a continuation of the fix in 1.45.0 for XdsNameResolver, but for other similar cases

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[github-actions]

Test Results

  12 files  ±0    12 suites  ±0   5m 57s ⏱️ + 1m 24s
  51 tests ±0    45 ✔️ ±0    6 💤 ±0  0 ❌ ±0 
127 runs  ±0  116 ✔️ ±0  11 💤 ±0  0 ❌ ±0 

Results for commit cc889f1. ± Comparison against base commit 1a90def.

♻️ This comment has been updated with latest results.

[renovate]

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[rpatel-figure]

AFAIK the GRPC dependency was never actually necessary for the usage of p8e-scope-sdk

[dkneisly-figure]

Let's give this a shot