refactor(customUpdater): Improve regex for version update

- Simplified regex for better clarity.
- Fixed potential issues with capturing groups.
- Improved regex to handle various version formats.
- Enhanced robustness of version matching.
- Updated regex to correctly handle variable assignment.

Author: taj54

src/updaters/customUpdater.ts

@@ -38,9 +38,8 @@ export class CustomUpdater implements UpdaterInterface {
         // console.log(extension, this.filePath);
 
         const regex: RegExp = new RegExp(
-          `(${this.variableName}\\s*(?:=|=>|:)\\s*['"])([0-9]+\\.[0-9]+\\.[0-9]+(?:-[a-zA-Z0-9_.-]+)?(?:\\+[a-zA-Z0-9_.-]+)?)(['"])`,
+          `\\$${this.variableName}\\s*(?:=|=>|:)\\s*['"]([0-9]+\\.[0-9]+\\.[0-9]+(?:-[A-Za-z0-9_.-]+)?(?:\\+[A-Za-z0-9_.-]+)?)['"]`,
         );
-
         this.currentVersion = this.manifestParser.getVersion(this.filePath, 'regex', {
           regex,
         });
@@ -69,7 +68,7 @@ export class CustomUpdater implements UpdaterInterface {
     } else {
       // eslint-disable-next-line no-useless-escape
       const regexReplace: RegExp = new RegExp(
-        `(${this.variableName}\\s*(?:=|=>|:)\\s*['"])([0-9]+\\.[0-9]+\\.[0-9]+(?:-[a-zA-Z0-9_.-]+)?(?:\\+[a-zA-Z0-9_.-]+)?)(['"])`,
+        `(.*?\\$${this.variableName}\\s*(?:=|=>|:)\\s*['"])([0-9]+\\.[0-9]+\\.[0-9]+(?:-[A-Za-z0-9_.-]+)?(?:\\+[A-Za-z0-9_.-]+)?)(['"];?)`,
       );
 
       this.manifestParser.updateVersion(this.filePath, newVersion, 'regex', {