Correct regular expression used to parse library.properties depends field elements

Empty version constraints are supported by the Arduino library system (they match any version).

Previously, the regular expression used to split the library name from the version constraint caused these empty
constraints to incorrectly be considered invalid.

Author: per1234

Diff for: internal/rule/rulefunction/library.go

@@ -1544,7 +1544,7 @@ type libDependency struct {
 	parseConstraintErr error                     // Error produced by parsing the version constraint.
 }
 
-var dependRegexp = regexp.MustCompile("^([^()]+?) *(?:\\((.+)\\))?$")
+var dependRegexp = regexp.MustCompile("^([^()]+?) *(?:\\((.*)\\))?$")
 
 // libDependencies parses the library.properties `depends` field contents and returns an array of libDependency objects
 func libDependencies(depends string) []libDependency {

Diff for: internal/rule/rulefunction/testdata/libraries/DependsIndexed/library.properties

@@ -7,4 +7,4 @@ paragraph=Supports HTTP1.1 and you can do GET and POST.
 category=Communication
 url=http://example.com/
 architectures=avr
-depends=,(foo),foo (bar),Adafruit NeoPixel,Servo (<1.1.4),Stepper (<=1.1.3),Mouse (=1.0.0),Keyboard (>=1.0.1),WiFiNINA (>1.0.0)
+depends=,(foo),foo (bar),Adafruit NeoPixel,Servo (<1.1.4),Stepper (<=1.1.3),Mouse (=1.0.0),Keyboard (>=1.0.1),WiFiNINA (>1.0.0),Ethernet ()