Upgrade Gradle Wrapper to `7.3`

.github/template-cleanup/gradle.properties

@@ -23,7 +23,7 @@ platformPlugins =
 javaVersion = 11
 
 # Gradle Releases -> https://github.com/gradle/gradle/releases
-gradleVersion = 7.2
+gradleVersion = 7.3
 
 # Opt-out flag for bundling Kotlin standard library.
 # See https://plugins.jetbrains.com/docs/intellij/kotlin.html#kotlin-standard-library for details.

README.md

@@ -340,7 +340,7 @@ Dependabot is a bot provided by GitHub to check the build configuration files an
 > **NOTE:** Dependabot doesn't yet support checking of the Gradle Wrapper.
 > Check the [Gradle Releases][gradle-releases] page and update your `gradle.properties` file with:
 > ```properties
-> gradleVersion = 7.2
+> gradleVersion = 7.3
 > ```
 > and run
 > ```bash