fix: bump tarampampam/curl from 8.11.0 to 8.12.0 in /otelcol

Bumps [tarampampam/curl](https://github.com/tarampampam/curl-docker) from 8.11.0 to 8.12.0.
- [Release notes](https://github.com/tarampampam/curl-docker/releases)
- [Commits](tarampampam/curl-docker@v8.11.0...v8.12.0)

---
updated-dependencies:
- dependency-name: tarampampam/curl
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

otelcol/Dockerfile

@@ -8,7 +8,7 @@ FROM ghcr.io/open-telemetry/opentelemetry-collector-releases/opentelemetry-colle
 
 FROM ghcr.io/open-telemetry/opentelemetry-collector-releases/opentelemetry-collector-contrib:0.116.1-armv7 as otelcol-armv7
 
-FROM ghcr.io/tarampampam/curl:8.11.0 as curl
+FROM ghcr.io/tarampampam/curl:8.12.0 as curl
 
 FROM scratch as container