STRY56801912: Changed the image version in README.md file

Author: smruti-mishra-sn

README.md

@@ -55,11 +55,11 @@ npm unlink .
 ### Building Docker Image
 
 ```sh
-docker build -t servicenowdocker/sndevops:3.1.0 .
+docker build -t servicenowdocker/sndevops:4.0.0 .
 ```
 
 ```sh
-docker push servicenowdocker/sndevops:3.1.0
+docker push servicenowdocker/sndevops:4.0.0
 ```
 
 ## Integrating with GitLab
@@ -85,7 +85,7 @@ stages:
 
 package:
   stage: package
-  image: servicenowdocker/sndevops:3.1.0
+  image: servicenowdocker/sndevops:4.0.0
   script: 
     - sndevopscli create artifact -a '[{"name":"artifact-name-$CI_JOB_ID","repositoryName":"artifact-repo-name" ,"version":"1.3.0"}]'
     - sndevopscli create package -n "package-name" -a '[{"name":"artifact-name-$CI_JOB_ID","repositoryName":"artifact-repo-name" ,"version":"1.3.0"}]
@@ -97,7 +97,7 @@ stages:
 
 package:
   stage: package
-  image: servicenowdocker/sndevops:3.1.0
+  image: servicenowdocker/sndevops:4.0.0
   script: 
     - sndevopscli create artifact -u <serviceno-url> -t <tool-id> --token <tool-token> -a '[{"name":"artifact-name-$CI_JOB_ID","repositoryName":"artifact-repo-name" ,"version":"1.3.0"}]'
     - sndevopscli create package -u <serviceno-url> -t <tool-id> --token <tool-token> -n "package-mame" -a '[{"name":"artifact-name-$CI_JOB_ID","repositoryName":"artifact-repo-name" ,"version":"1.3.0"}]
@@ -121,7 +121,7 @@ stages:
 
 ServiceNow DevOps Change:
   stage: DevOpsChangeApproval
-  image: servicenowdocker/sndevops:3.1.0
+  image: servicenowdocker/sndevops:4.0.0
   script: 
     - sndevopscli create change -p '{"changeStepDetails":{"timeout":3600,"interval":100},"attributes":{"short_description":"Automated Software Deployment","description":"Automated Software Deployment.","assignment_group":"XXXXXXX","implementation_plan":"Software update is tested and results can be found in Test Summaries Tab.","backout_plan":"When software fails in production, the previous software release will be re-deployed.","test_plan":"Testing if the software was successfully deployed or not"}}'
 
@@ -151,7 +151,7 @@ stages:
 
 ServiceNow DevOps Sonar Scan Results:
   stage: DevOpsSonarStage
-  image: servicenowdocker/sndevops:3.1.0
+  image: servicenowdocker/sndevops:4.0.0
   script: 
     - sndevopscli create sonar -url 'https://sonarcloud.io' -projectKey 'xxxxxxx'