Move NodeJs 12 to 12.18.2 (#175)

diff --git a/core/nodejs12Action/CHANGELOG.md b/core/nodejs12Action/CHANGELOG.md
index 027975e..fcd23af 100644
--- a/core/nodejs12Action/CHANGELOG.md
+++ b/core/nodejs12Action/CHANGELOG.md
@@ -23,7 +23,7 @@
 Changes:
   - Update OpenWhisk npm package
 
-Node.js version = [12.18.0](https://nodejs.org/en/blog/release/v12.18.0/)
+Node.js version = [12.18.2](https://nodejs.org/en/blog/release/v12.18.2/)
 OpenWhisk version = [OpenWhisk v3.21.2](https://www.npmjs.com/package/openwhisk)
 
 ## Apache 1.15
diff --git a/core/nodejs12Action/Dockerfile b/core/nodejs12Action/Dockerfile
index 3cf80c0..d674972 100644
--- a/core/nodejs12Action/Dockerfile
+++ b/core/nodejs12Action/Dockerfile
@@ -15,7 +15,7 @@
 # limitations under the License.
 #
 
-FROM node:12.18.0-stretch
+FROM node:12.18.2-stretch
 
 # Initial update and some basics.
 #