feat: Make span when call DynamoDB API. (#232)

* feat: enable to create span on run DynamoDB operation by activating feature tracing.

* fix: span setting

* fix: exclude service from docker compose

* chore: run cargo update

* chore: update README, and revert docker compose setting.

* fix: propagate feature flag

* fix: rust toolchain version in CI

* fix: clippy warnings

.github/workflows/ci.yml

@@ -16,7 +16,7 @@ jobs:
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: 1.66.1
+          toolchain: 1.67.0
           override: true
       - name: Install deps
         run: sudo apt-get install libssl-dev