fix(deps): update module github.com/mailgun/mailgun-go/v4 to v4.15.1 #2841

	name: Go-test
	on: [push, pull_request]

	jobs:
	build:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4
	- name: Setup Go
	uses: actions/setup-go@v5
	with:
	go-version: stable
	- name: Build
	run: go build -v ./...
	- name: Test with the Go CLI
	run: go test ./...
	- name: Test coverage
	run: go test -race -covermode=atomic -coverprofile=coverage.out ./...
	- name: Upload coverage to Codecov
	uses: codecov/codecov-action@v4

	golangci:
	name: lint
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- uses: actions/setup-go@v5
	with:
	go-version: stable
	- name: golangci-lint
	uses: golangci/golangci-lint-action@v6
	with:
	version: v1.59

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