datasource-http-backend: Update comments for ForwardHTTPHeaders break…

…ing change (#156)

* datasource-http-backend: Bump SDK

* datasource-http-backend: go mod tidy

* datasource-http-backend: Update comments for http client creation

examples/datasource-http-backend/go.mod

@@ -3,7 +3,7 @@ module github.com/grafana/datasource-http-backend
 go 1.20
 
 require (
-	github.com/grafana/grafana-plugin-sdk-go v0.157.0
+	github.com/grafana/grafana-plugin-sdk-go v0.161.0
 	github.com/magefile/mage v1.14.0
 	github.com/stretchr/testify v1.8.2
 	go.opentelemetry.io/otel v1.14.0
@@ -21,13 +21,13 @@ require (
 	github.com/cpuguy83/go-md2man/v2 v2.0.2 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/elazarl/goproxy v0.0.0-20220115173737-adb46da277ac // indirect
-	github.com/fatih/color v1.7.0 // indirect
+	github.com/fatih/color v1.15.0 // indirect
 	github.com/getkin/kin-openapi v0.112.0 // indirect
 	github.com/go-logr/logr v1.2.3 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/go-openapi/jsonpointer v0.19.5 // indirect
 	github.com/go-openapi/swag v0.19.15 // indirect
-	github.com/golang/protobuf v1.5.2 // indirect
+	github.com/golang/protobuf v1.5.3 // indirect
 	github.com/golang/snappy v0.0.3 // indirect
 	github.com/google/flatbuffers v2.0.0+incompatible // indirect
 	github.com/google/go-cmp v0.5.9 // indirect
@@ -36,24 +36,24 @@ require (
 	github.com/grpc-ecosystem/go-grpc-middleware v1.4.0 // indirect
 	github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0 // indirect
 	github.com/grpc-ecosystem/grpc-gateway/v2 v2.7.0 // indirect
-	github.com/hashicorp/go-hclog v0.14.1 // indirect
-	github.com/hashicorp/go-plugin v1.4.3 // indirect
-	github.com/hashicorp/yamux v0.0.0-20181012175058-2f1d1f20f75d // indirect
+	github.com/hashicorp/go-hclog v1.5.0 // indirect
+	github.com/hashicorp/go-plugin v1.4.9 // indirect
+	github.com/hashicorp/yamux v0.1.1 // indirect
 	github.com/invopop/yaml v0.1.0 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/klauspost/compress v1.13.1 // indirect
 	github.com/mailru/easyjson v0.7.7 // indirect
 	github.com/mattetti/filebuffer v1.0.1 // indirect
-	github.com/mattn/go-colorable v0.1.4 // indirect
-	github.com/mattn/go-isatty v0.0.10 // indirect
+	github.com/mattn/go-colorable v0.1.13 // indirect
+	github.com/mattn/go-isatty v0.0.18 // indirect
 	github.com/mattn/go-runewidth v0.0.9 // indirect
 	github.com/matttproud/golang_protobuf_extensions v1.0.4 // indirect
-	github.com/mitchellh/go-testing-interface v1.0.0 // indirect
+	github.com/mitchellh/go-testing-interface v1.14.1 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
 	github.com/mohae/deepcopy v0.0.0-20170929034955-c48cc78d4826 // indirect
-	github.com/oklog/run v1.0.0 // indirect
+	github.com/oklog/run v1.1.0 // indirect
 	github.com/olekukonko/tablewriter v0.0.5 // indirect
 	github.com/pierrec/lz4/v4 v4.1.8 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
@@ -67,20 +67,21 @@ require (
 	github.com/unknwon/log v0.0.0-20150304194804-e617c87089d3 // indirect
 	github.com/urfave/cli v1.22.12 // indirect
 	go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.40.0 // indirect
+	go.opentelemetry.io/contrib/instrumentation/net/http/httptrace/otelhttptrace v0.37.0 // indirect
 	go.opentelemetry.io/contrib/propagators/jaeger v1.15.0 // indirect
 	go.opentelemetry.io/otel/exporters/otlp/internal/retry v1.14.0 // indirect
 	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.14.0 // indirect
 	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.14.0 // indirect
 	go.opentelemetry.io/otel/metric v0.37.0 // indirect
 	go.opentelemetry.io/otel/sdk v1.14.0 // indirect
 	go.opentelemetry.io/proto/otlp v0.19.0 // indirect
-	golang.org/x/net v0.8.0 // indirect
-	golang.org/x/sys v0.6.0 // indirect
-	golang.org/x/text v0.8.0 // indirect
+	golang.org/x/net v0.9.0 // indirect
+	golang.org/x/sys v0.7.0 // indirect
+	golang.org/x/text v0.9.0 // indirect
 	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
-	google.golang.org/genproto v0.0.0-20230110181048-76db0878b65f // indirect
+	google.golang.org/genproto v0.0.0-20230410155749-daa745c078e1 // indirect
 	google.golang.org/grpc v1.54.0 // indirect
-	google.golang.org/protobuf v1.28.1 // indirect
+	google.golang.org/protobuf v1.30.0 // indirect
 	gopkg.in/fsnotify/fsnotify.v1 v1.4.7 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect