go.mod: github.com/google/uuid v1.2.0

full diff: https://github.com/google/uuid/compare/v1.1.2...v1.2.0

I did not switch to us the `uuid.NewString()` function; we are not currently using
`uuid.New()`, probably because it can `panic` in case an invalid UUID is produced;
in stead we are using `uuid.NewRandom()`, which is equivalent, but returns an
error instead.

Changes:

- v1.2.0: Add NewString()
  This release introduces the NewString() function which is the equivalent of
  uuid.New().String().
- v1.1.5: Syntactic cleanup
  There are no code changes. A missing period was add to a godoc comment and the
  linter was told to not complain that the results of hash.Write() are ignored
  (the function cannot fail)
- v1.1.4: Further error optimizations
  Do not allocate memory for errors (it is only one word)
- v1.1.3: Optimize error reporting
  Optimize length of time it takes to discover an input is bad by no longer using
  fmt.Errorf, which is quite slow. It now uses a custom error type that formats
  the string when the Error method is called rather than when generating the error.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

vendor/github.com/google/uuid/uuid.go

@@ -35,6 +35,12 @@ const (
 
 var rander = rand.Reader // random function
 
+type invalidLengthError struct{ len int }
+
+func (err invalidLengthError) Error() string {
+	return fmt.Sprintf("invalid UUID length: %d", err.len)
+}
+
 // Parse decodes s into a UUID or returns an error.  Both the standard UUID
 // forms of xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx and
 // urn:uuid:xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx are decoded as well as the
@@ -68,7 +74,7 @@ func Parse(s string) (UUID, error) {
 		}
 		return uuid, nil
 	default:
-		return uuid, fmt.Errorf("invalid UUID length: %d", len(s))
+		return uuid, invalidLengthError{len(s)}
 	}
 	// s is now at least 36 bytes long
 	// it must be of the form  xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
@@ -112,7 +118,7 @@ func ParseBytes(b []byte) (UUID, error) {
 		}
 		return uuid, nil
 	default:
-		return uuid, fmt.Errorf("invalid UUID length: %d", len(b))
+		return uuid, invalidLengthError{len(b)}
 	}
 	// s is now at least 36 bytes long
 	// it must be of the form  xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx