chore(deps): update golang docker tag to v1.26

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
golang	stage	minor	1.25-alpine3.23 → 1.26-alpine3.23

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[github-actions]

📊 Code Coverage Report

Total Coverage: 72.0%

Coverage by Package

github.com/ullbergm/echo-server/handlers/builder.go:8:	BuilderHandler			100.0%
github.com/ullbergm/echo-server/handlers/echo.go:27:	EchoHandler			100.0%
github.com/ullbergm/echo-server/handlers/echo.go:62:	EchoHandlerHead			100.0%
github.com/ullbergm/echo-server/handlers/echo.go:78:	buildEchoResponse		100.0%
github.com/ullbergm/echo-server/handlers/echo.go:94:	buildRequestInfo		100.0%
github.com/ullbergm/echo-server/handlers/echo.go:122:	buildHeadersMap			100.0%
github.com/ullbergm/echo-server/handlers/echo.go:130:	buildServerInfo			83.3%
github.com/ullbergm/echo-server/handlers/echo.go:147:	getHostAddress			75.0%
github.com/ullbergm/echo-server/handlers/echo.go:163:	getEnvironmentVariables		94.1%
github.com/ullbergm/echo-server/handlers/echo.go:199:	getKubernetesInfo		100.0%
github.com/ullbergm/echo-server/handlers/echo.go:245:	getRemoteAddress		100.0%
github.com/ullbergm/echo-server/handlers/echo.go:261:	getCustomStatusCode		100.0%
github.com/ullbergm/echo-server/handlers/echo.go:276:	parseCookies			100.0%
github.com/ullbergm/echo-server/handlers/echo.go:293:	setResponseCookies		100.0%
github.com/ullbergm/echo-server/handlers/echo.go:309:	parseSetCookieHeader		100.0%
github.com/ullbergm/echo-server/handlers/echo.go:380:	parseExpires			100.0%
github.com/ullbergm/echo-server/handlers/echo.go:404:	getCompressionInfo		100.0%
github.com/ullbergm/echo-server/handlers/echo.go:438:	getRequestTLSInfo		33.3%
github.com/ullbergm/echo-server/handlers/echo.go:465:	getServerTLSInfo		100.0%
github.com/ullbergm/echo-server/handlers/metrics.go:17:	Gather				100.0%
github.com/ullbergm/echo-server/handlers/metrics.go:36:	MetricsHandler			100.0%
github.com/ullbergm/echo-server/main.go:32:		main				0.0%
github.com/ullbergm/echo-server/main.go:217:		formatValue			0.0%
github.com/ullbergm/echo-server/main.go:235:		startDualStackServers		0.0%
github.com/ullbergm/echo-server/main.go:309:		storeCertificateInfo		0.0%
github.com/ullbergm/echo-server/services/body.go:37:	NewBodyService			100.0%
github.com/ullbergm/echo-server/services/body.go:53:	ParseBody			91.7%
github.com/ullbergm/echo-server/services/body.go:108:	isBinaryData			100.0%
github.com/ullbergm/echo-server/services/body.go:132:	parseJSON			100.0%
github.com/ullbergm/echo-server/services/body.go:144:	parseXML			100.0%
github.com/ullbergm/echo-server/services/body.go:151:	parseFormURLEncoded		100.0%
github.com/ullbergm/echo-server/services/body.go:170:	parseMultipartForm		100.0%
github.com/ullbergm/echo-server/services/jwt.go:18:	NewJWTService			100.0%
github.com/ullbergm/echo-server/services/jwt.go:35:	ExtractAndDecodeJWTs		100.0%
github.com/ullbergm/echo-server/services/jwt.go:66:	decodeJWT			100.0%
github.com/ullbergm/echo-server/services/jwt.go:99:	decodeBase64URL			100.0%
github.com/ullbergm/echo-server/services/jwt.go:124:	truncateToken			100.0%
github.com/ullbergm/echo-server/services/metrics.go:18:	NewMetricsService		100.0%
github.com/ullbergm/echo-server/services/metrics.go:39:	MetricsMiddleware		90.9%
github.com/ullbergm/echo-server/services/tls.go:24:	NewTLSService			100.0%
github.com/ullbergm/echo-server/services/tls.go:29:	GetOrGenerateCertificate	87.5%
github.com/ullbergm/echo-server/services/tls.go:65:	generateSelfSignedCertificate	75.0%
github.com/ullbergm/echo-server/services/tls.go:135:	logCertificateInfo		100.0%
github.com/ullbergm/echo-server/services/tls.go:158:	ParseCertificate		100.0%
total:							(statements)			72.0%

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