deps: update module golang.org/x/net to v0.17.0 [security] (#773)

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| golang.org/x/net | require | minor | `v0.15.0` -> `v0.17.0` |

### GitHub Vulnerability Alerts

#### [CVE-2023-39325](https://togithub.com/golang/go/issues/63417)

A malicious HTTP/2 client which rapidly creates requests and immediately
resets them can cause excessive server resource consumption. While the
total number of requests is bounded by the
http2.Server.MaxConcurrentStreams setting, resetting an in-progress
request allows the attacker to create a new request while the existing
one is still executing.

With the fix applied, HTTP/2 servers now bound the number of
simultaneously executing handler goroutines to the stream concurrency
limit (MaxConcurrentStreams). New requests arriving when at the limit
(which can only happen after the client has reset an existing, in-flight
request) will be queued until a handler exits. If the request queue
grows too large, the server will terminate the connection.

This issue is also fixed in golang.org/x/net/http2 for users manually
configuring HTTP/2.

The default stream concurrency limit is 250 streams (requests) per
HTTP/2 connection. This value may be adjusted using the
golang.org/x/net/http2 package; see the Server.MaxConcurrentStreams
setting and the ConfigureServer function.

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go.mod

@@ -15,7 +15,7 @@ require (
 	github.com/hetznercloud/hcloud-go v1.51.0
 	github.com/stretchr/testify v1.8.4
 	golang.org/x/crypto v0.14.0
-	golang.org/x/net v0.15.0
+	golang.org/x/net v0.17.0
 )
 
 require (

go.sum

@@ -203,6 +203,8 @@ golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
 golang.org/x/net v0.8.0/go.mod h1:QVkue5JL9kW//ek3r6jTKnTFis1tRmNAW2P1shuFdJc=
 golang.org/x/net v0.15.0 h1:ugBLEUaxABaB5AJqW9enI0ACdci2RUd4eP51NTBvuJ8=
 golang.org/x/net v0.15.0/go.mod h1:idbUs1IY1+zTqbi8yxTbhexhEEk5ur9LInksu6HrEpk=
+golang.org/x/net v0.17.0 h1:pVaXccu2ozPjCXewfr1S7xza/zcXTity9cCdXQYSjIM=
+golang.org/x/net v0.17.0/go.mod h1:NxSsAGuq816PNPmqtQdLE42eU2Fs7NoRIZrHJAlaCOE=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=