chore: skip releases for chore commits [skip ci] (#483)

Related to projen/projen#3164

Most of our releases are triggered by dependency updates, which are
mostly just `jsii` and `projen` updates which oft-times have no tangible
benefit to consumers and is purely just noise.

---

_By submitting this pull request, I confirm that my contribution is made
under the terms of the Apache-2.0 license_

.projenrc.ts

@@ -1,4 +1,10 @@
-import { awscdk, javascript, github, DependencyType } from "projen";
+import {
+  awscdk,
+  javascript,
+  github,
+  DependencyType,
+  ReleasableCommits,
+} from "projen";
 
 const CDK_VERSION = "2.112.0";
 
@@ -19,6 +25,9 @@ const project = new awscdk.AwsCdkConstructLibrary({
   srcdir: "lib",
   testdir: "test",
 
+  // To reduce the noisy release frequency we only release features and fixes
+  releasableCommits: ReleasableCommits.featuresAndFixes(),
+
   // Artifact config: Python
   publishToPypi: {
     distName: "cdk-monitoring-constructs",