Fix build.gradle files missing some updates (#6624)

Within a single file, when multiple configurations include the same dependency, only one would
be updated.

gradle/lib/dependabot/gradle/file_updater.rb

@@ -112,26 +112,30 @@ def update_files_for_dep_set_change(buildfiles, old_req, new_req)
 
       def update_version_in_buildfile(dependency, buildfile, previous_req,
                                       requirement)
+        original_content = buildfile.content.dup
+
         updated_content =
-          buildfile.content.gsub(
-            original_buildfile_declaration(dependency, previous_req),
-            updated_buildfile_declaration(
-              dependency,
-              previous_req,
-              requirement
+          original_buildfile_declarations(dependency, previous_req).reduce(original_content) do |content, declaration|
+            content.gsub(
+              declaration,
+              updated_buildfile_declaration(
+                declaration,
+                previous_req,
+                requirement
+              )
             )
-          )
+          end
 
         raise "Expected content to change!" if updated_content == buildfile.content
 
         updated_file(file: buildfile, content: updated_content)
       end
 
-      def original_buildfile_declaration(dependency, requirement)
+      def original_buildfile_declarations(dependency, requirement)
         # This implementation is limited to declarations that appear on a
         # single line.
         buildfile = buildfiles.find { |f| f.name == requirement.fetch(:file) }
-        buildfile.content.lines.find do |line|
+        buildfile.content.lines.select do |line|
           line = evaluate_properties(line, buildfile)
           line = line.gsub(%r{(?<=^|\s)//.*$}, "")
 
@@ -173,10 +177,10 @@ def property_value_finder
           new(dependency_files: dependency_files)
       end
 
-      def updated_buildfile_declaration(dependency, previous_req, requirement)
+      def updated_buildfile_declaration(original_buildfile_declaration, previous_req, requirement)
         original_req_string = previous_req.fetch(:requirement)
 
-        original_buildfile_declaration(dependency, previous_req).gsub(
+        original_buildfile_declaration.gsub(
           original_req_string,
           requirement.fetch(:requirement)
         )

gradle/spec/dependabot/gradle/file_updater_spec.rb

@@ -339,6 +339,42 @@
         end
       end
 
+      context "with multiple configurations using the same dependency" do
+        let(:buildfile_fixture_name) { "multiple_configurations.gradle" }
+
+        let(:dependencies) do
+          [
+            Dependabot::Dependency.new(
+              name: "org.projectlombok:lombok",
+              version: "1.18.26",
+              previous_version: "1.18.24",
+              requirements: [{
+                file: "build.gradle",
+                requirement: "1.18.26",
+                groups: [],
+                source: {
+                  type: "maven_repo",
+                  url: "https://repo.maven.apache.org/maven2"
+                }
+              }],
+              previous_requirements: [{
+                file: "build.gradle",
+                requirement: "1.18.24",
+                groups: [],
+                source: nil
+              }],
+              package_manager: "gradle"
+            )
+          ]
+        end
+
+        it "updates the version in all configurations" do
+          expect(updated_buildfile.content).
+            to include("compileOnly 'org.projectlombok:lombok:1.18.26'").
+            and include("annotationProcessor 'org.projectlombok:lombok:1.18.26'")
+        end
+      end
+
       context "with a dependency version defined by a property" do
         let(:dependency_files) { [buildfile, subproject_buildfile] }
         let(:subproject_buildfile) do

gradle/spec/fixtures/buildfiles/multiple_configurations.gradle

@@ -0,0 +1,12 @@
+plugins {
+	id 'java'
+}
+
+repositories {
+	mavenCentral()
+}
+
+dependencies {
+	compileOnly 'org.projectlombok:lombok:1.18.24'
+	annotationProcessor 'org.projectlombok:lombok:1.18.24'
+}