Use parentheses when declaring dependencies

Update all dependencies declarations to use the form `scope(reference)`
rather than `scope reference`.

Prior to this commit we declared dependencies without parentheses unless
we were forced to add them due to an `exclude`.

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/test/resources/org/springframework/boot/gradle/plugin/DependencyManagementPluginActionIntegrationTests-helpfulErrorWhenVersionlessDependencyFailsToResolve.gradle

@@ -4,5 +4,5 @@ plugins {
 }
 
 dependencies {
-	implementation 'org.springframework.boot:spring-boot-starter-web'
+	implementation('org.springframework.boot:spring-boot-starter-web')
 }

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/test/resources/org/springframework/boot/gradle/plugin/KotlinPluginActionIntegrationTests-kotlinVersionPropertyIsSet.gradle

@@ -21,7 +21,7 @@ repositories {
 }
 
 dependencies {
-	implementation 'org.jetbrains.kotlin:kotlin-stdlib-jdk8'
+	implementation('org.jetbrains.kotlin:kotlin-stdlib-jdk8')
 }
 
 task kotlinVersion {

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/test/resources/org/springframework/boot/gradle/plugin/SpringBootPluginIntegrationTests-unresolvedDependenciesAreAnalyzedWhenDependencyResolutionFails.gradle

@@ -8,5 +8,5 @@ repositories {
 }
 
 dependencies {
-	implementation 'org.springframework.boot:spring-boot-starter'
+	implementation('org.springframework.boot:spring-boot-starter')
 }

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/test/resources/org/springframework/boot/gradle/tasks/bundling/BootJarIntegrationTests-duplicatesAreHandledGracefully.gradle

@@ -22,6 +22,6 @@ repositories {
 }
 
 dependencies {
-	implementation "org.apache.commons:commons-lang3:3.6"
+	implementation("org.apache.commons:commons-lang3:3.6")
 	provided "org.apache.commons:commons-lang3:3.6"
 }