fix: correct release-please manifest format to resolve version parsing error

- Update .release-please-manifest.json to use correct key-value format
- Fix versionString.match is not a function error
- Enable proper version parsing for release-please workflow
- Maintain alpha version support for SDK and DApp packages

Author: SeddikBellamine

.release-please-manifest.json

@@ -1,10 +1,4 @@
 {
-  "packages": {
-    ".": {
-      "version": "0.0.3-alpha"
-    },
-    "dapp": {
-      "version": "0.0.2-alpha"
-    }
-  }
-} 
+  ".": "0.0.3-alpha",
+  "dapp": "0.0.2-alpha"
+}