chore(deps): update golang version to v1.25.3 (#344)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [go](https://go.dev/)
([source](https://redirect.github.com/golang/go)) | golang | minor |
`1.24.6` -> `1.25.3` |
| golang | stage | minor | `1.24.6` -> `1.25.3` |

---

### Release Notes

<details>
<summary>golang/go (go)</summary>

###
[`v1.25.3`](https://redirect.github.com/golang/go/compare/go1.25.2...go1.25.3)

###
[`v1.25.2`](https://redirect.github.com/golang/go/compare/go1.25.1...go1.25.2)

###
[`v1.25.1`](https://redirect.github.com/golang/go/compare/go1.25.0...go1.25.1)

###
[`v1.25.0`](https://redirect.github.com/golang/go/compare/go1.24.6...go1.25rc2)

###
[`v1.24.9`](https://redirect.github.com/golang/go/compare/go1.24.8...go1.24.9)

###
[`v1.24.8`](https://redirect.github.com/golang/go/compare/go1.24.7...go1.24.8)

###
[`v1.24.7`](https://redirect.github.com/golang/go/compare/go1.24.6...go1.24.7)

</details>

---

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---

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---

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Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.24.6 as builder-kafka
+FROM golang:1.25.3 as builder-kafka
 COPY . /go/src/github.com/newrelic/nri-kafka/
 RUN cd /go/src/github.com/newrelic/nri-kafka && \
     make && \

go.mod

@@ -1,6 +1,6 @@
 module github.com/newrelic/nri-kafka
 
-go 1.24.6
+go 1.25.3
 
 require (
 	github.com/IBM/sarama v1.43.3

tests/integration/Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.24.6 as builder
+FROM golang:1.25.3 as builder
 ARG CGO_ENABLED=0
 ARG NRJMX_VERSION
 WORKDIR /go/src/github.com/newrelic/nri-kafka