fix(deps): update module github.com/beevik/etree to v1.6.0 (#83)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

go.mod

@@ -1,11 +1,11 @@
 module github.com/leifj/signedxml
 
-go 1.21.0
+go 1.23.0
 
 toolchain go1.25.0
 
 require (
-	github.com/beevik/etree v1.5.1
+	github.com/beevik/etree v1.6.0
 	github.com/russellhaering/goxmldsig v1.5.0
 	github.com/smartystreets/goconvey v1.8.1
 	github.com/stretchr/testify v1.10.0

go.sum

@@ -1,5 +1,7 @@
 github.com/beevik/etree v1.5.1 h1:TC3zyxYp+81wAmbsi8SWUpZCurbxa6S8RITYRSkNRwo=
 github.com/beevik/etree v1.5.1/go.mod h1:gPNJNaBGVZ9AwsidazFZyygnd+0pAU38N4D+WemwKNs=
+github.com/beevik/etree v1.6.0 h1:u8Kwy8pp9D9XeITj2Z0XtA5qqZEmtJtuXZRQi+j03eE=
+github.com/beevik/etree v1.6.0/go.mod h1:bh4zJxiIr62SOf9pRzN7UUYaEDa9HEKafK25+sLc0Gc=
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=