Bump the docker-plugin group across 1 directory with 2 updates

Bumps the docker-plugin group with 2 updates in the /cmd/plugin directory: golang and fluent/fluent-bit.


Updates `golang` from 1.20.2 to 1.22.3

Updates `fluent/fluent-bit` from 2.2.2 to 3.0.6

---
updated-dependencies:
- dependency-name: golang
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: docker-plugin
- dependency-name: fluent/fluent-bit
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: docker-plugin
...

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

cmd/plugin/Dockerfile

@@ -1,12 +1,12 @@
 # We can't go past 1.20.2 until this issue is solved: https://github.com/golang/go/issues/62130#issuecomment-1687335898
-FROM golang:1.20.2 as build
+FROM golang:1.22.3 as build
 WORKDIR /root
 COPY go.mod go.sum ./
 RUN go mod download
 COPY . .
 RUN make build-plugin
 
-FROM fluent/fluent-bit:2.2.2
+FROM fluent/fluent-bit:3.0.6
 COPY --from=build /root/out_clickhouse.so /fluent-bit/bin/
 EXPOSE 2020
 CMD ["/fluent-bit/bin/fluent-bit", "--plugin", "/fluent-bit/bin/out_clickhouse.so", "--config", "/fluent-bit/etc/fluent-bit.conf"]