fix(changelogmarkdown): do not print date

This flag is especially used during dryruns, so there is no need to print the release dates

packages/sfpowerscripts-cli/src/impl/changelog/ChangelogMarkdownGenerator.ts

@@ -45,7 +45,7 @@ export default class ChangelogMarkdownGenerator {
                 payload += `\n<a id=${release.hashId}></a>\n`; // Create anchor from release hash Id
                 payload += `# ${release.names.join(`/`)}\n `;
                 payload += `Cumulative Release Number: <b>${release.buildNumber}</b> \n\n`;
-                if(release.date)
+                if(release.date && !this.isForWorkItemOnlyOutput)
                   payload += `Matching defintion first created or deployed to an org on: ${release.date}\n `
 
             }