fix: Add tag-separator configuration to ensure Release Please creates tags without prefixes (#65)

* Initial plan for issue

* Add tag-separator configuration to remove tag prefixes and separators

Co-authored-by: lgallard <6194359+lgallard@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: lgallard <6194359+lgallard@users.noreply.github.com>

Author: Copilot

.release-please-config.json

@@ -3,7 +3,8 @@
     ".": {
       "release-type": "terraform-module",
       "changelog-path": "CHANGELOG.md",
-      "include-v-in-tag": false
+      "include-v-in-tag": false,
+      "tag-separator": ""
     }
   }
 }