fix(deps): update module go.opentelemetry.io/contrib/bridges/otelslog to v0.21.0 (#993)

This PR contains the following updates:

| Package | Change | [Age](https://docs.renovatebot.com/merge-confidence/) | [Confidence](https://docs.renovatebot.com/merge-confidence/) |
|---|---|---|---|
| [go.opentelemetry.io/contrib/bridges/otelslog](https://github.com/open-telemetry/opentelemetry-go-contrib) | `v0.20.1` → `v0.21.0` | ![age](https://developer.mend.io/api/mc/badges/age/go/go.opentelemetry.io%2fcontrib%2fbridges%2fotelslog/v0.21.0?slim=true) | ![confidence](https://developer.mend.io/api/mc/badges/confidence/go/go.opentelemetry.io%2fcontrib%2fbridges%2fotelslog/v0.20.1/v0.21.0?slim=true) |

---

### Release Notes

<details>
<summary>open-telemetry/opentelemetry-go-contrib (go.opentelemetry.io/contrib/bridges/otelslog)</summary>

### [`v0.21.0`](https://github.com/open-telemetry/opentelemetry-go-contrib/releases/tag/v0.21.0)

#### 0.21.0 - 2021-06-18

##### Fixed

- Dockerfile based examples for `otelgin` and `otelmacaron`. ([#&#8203;767](https://github.com/open-telemetry/opentelemetry-go-contrib/issues/767))

##### Changed

- Supported minimum version of Go bumped from 1.14 to 1.15. ([#&#8203;787](https://github.com/open-telemetry/opentelemetry-go-contrib/issues/787))
- EKS Resource Detector now use the Kubernetes Go client to obtain the ConfigMap. ([#&#8203;813](https://github.com/open-telemetry/opentelemetry-go-contrib/issues/813))

##### Removed

- Remove service name from `otelmongodb` configuration and span attributes. ([#&#8203;763](https://github.com/open-telemetry/opentelemetry-go-contrib/issues/763))

</details>

---

### Configuration

📅 **Schedule**: (UTC)

- Branch creation
  - At any time (no schedule defined)
- Automerge
  - At any time (no schedule defined)

🚦 **Automerge**: Enabled.

♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update again.

---

 - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box

---

This PR has been generated by [Mend Renovate CLI](https://github.com/renovatebot/renovate).
<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0NC4xMzMuMCIsInVwZGF0ZWRJblZlciI6IjQ0LjEzMy4wIiwidGFyZ2V0QnJhbmNoIjoibWFpbiIsImxhYmVscyI6W119-->

Reviewed-on: https://git.unbound.se/unboundsoftware/schemas/pulls/993
Co-authored-by: Renovate Bot <renovate@unbound.se>

go.mod

@@ -21,7 +21,7 @@ require (
 	github.com/stretchr/testify v1.12.1
 	github.com/vektah/gqlparser/v2 v2.5.60
 	github.com/wundergraph/graphql-go-tools/v2 v2.26.0
-	go.opentelemetry.io/contrib/bridges/otelslog v0.20.1
+	go.opentelemetry.io/contrib/bridges/otelslog v0.21.0
 	go.opentelemetry.io/otel v1.47.0
 	go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp v1.47.0
 	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.47.0

go.sum

@@ -227,8 +227,8 @@ github.com/wundergraph/graphql-go-tools/v2 v2.26.0 h1:LkBu77I+Mp7lAfHulnHgug7W+n
 github.com/wundergraph/graphql-go-tools/v2 v2.26.0/go.mod h1:2+FpG5/GRCFYw+fU8jmid4bF+362KtCio5Fo7fzNvhU=
 go.opentelemetry.io/auto/sdk v1.2.1 h1:jXsnJ4Lmnqd11kwkBV2LgLoFMZKizbCi5fNZ/ipaZ64=
 go.opentelemetry.io/auto/sdk v1.2.1/go.mod h1:KRTj+aOaElaLi+wW1kO/DZRXwkF4C5xPbEe3ZiIhN7Y=
-go.opentelemetry.io/contrib/bridges/otelslog v0.20.1 h1:5sHc4ToTFjfSZCtGAAM6jPunICAmJX73htv372T4ipc=
-go.opentelemetry.io/contrib/bridges/otelslog v0.20.1/go.mod h1:oa6kgvyz/3GYW04dohd0++xJIH4xdQY8PAbpeCMaM8M=
+go.opentelemetry.io/contrib/bridges/otelslog v0.21.0 h1:/CdgE52i1OEPHhsGUqrggYNRaZy4v4YgVenGd52dRBI=
+go.opentelemetry.io/contrib/bridges/otelslog v0.21.0/go.mod h1:9pBdbVbuehIDzxN4accnzzxEUPT8Nq7grbZMo+J1VN4=
 go.opentelemetry.io/otel v1.47.0 h1:j7ALJ/zgkS7Z6aeJW09p8VC9804bC+PpeTfCD4XPnOM=
 go.opentelemetry.io/otel v1.47.0/go.mod h1:8wS9O2qfXrYrzp6hIF/HOYJJf/wIhFPhR2xLuP+iXQU=
 go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp v1.47.0 h1:7kszRN4Ze5GeAkUnBjBSUIunVBMA+mZIG04auueqguM=