Bump embedded-services, EC_TEST_CLI_REV, and embassy-time pins (#19)

* Bump embedded-services, EC_TEST_CLI_REV, and embassy-time pins

Update the embedded-services lockfile pins across all platforms to
pick up the v0.2.0 branch HEAD (f1f1e087), which includes:
- PR #852: uart-service Service<R, M> generic over MctpMedium
- PR #854: v0.2.0 mergeback (heapless 0.9.2, embassy-time 0.5.1)

Migrate all platforms from the removed Service::new(relay) API to
DefaultService::default_smbusespi(relay), which preserves the
SmbusEspi wire format used by existing hardware platforms.

Bump EC_TEST_CLI_REV from e674ca93 to d705cd4f to pick up
odp-platform-common PR #92, which adds SMBus PEC byte support to
ec-test-cli's serial transport — required by the post-#852
SmbusEspiMedium.

Bump dev-npcx embassy-time pins from 0.5.0 to 0.5.1 and
embassy-time-driver from 0.2.1 to 0.2.2, matching the transitive
requirements from the updated embedded-services.

Assisted-by: GitHub Copilot CLI:claude-opus-4.6-1m-internal

* Add cargo-vet exemptions for bumped dependencies

Add safe-to-deploy exemptions for crate versions pulled in by the
embedded-services v0.2.0 pin advancement. All are minor/patch version
bumps of existing dependencies, except hashbrown 0.17.1 (new transitive
from heapless 0.9).

Assisted-by: GitHub Copilot CLI:claude-opus-4.6-1m-internal

* Fix stale embassy-sync policy rev in dev-npcx cargo-vet config

Replace the rev-pinned policy key for embassy-sync with a generic
[policy.embassy-sync] entry (matching dev-imxrt's approach), and add
an exemption for the new git rev. The old rev (c8715fc1) no longer
matches the lockfile (e9c32931) after the embedded-services bump.

Assisted-by: GitHub Copilot CLI:claude-opus-4.6-1m-internal

Author: dymk

.github/workflows/check.yml

@@ -333,7 +333,7 @@ jobs:
       # if there are breaking changes in `ec-test-cli`
       #
       # We can update this commit when we want to pull in a new `ec-test-cli`
-      EC_TEST_CLI_REV: e674ca93
+      EC_TEST_CLI_REV: d705cd4f
 
     steps:
       - uses: actions/checkout@v4