Pin dependency release-plan to 0.17.4 (#456)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package.json

@@ -88,7 +88,7 @@
     "qunit": "2.25.0",
     "qunit-dom": "3.5.0",
     "release-it": "19.2.4",
-    "release-plan": "^0.17.4",
+    "release-plan": "0.17.4",
     "stylelint": "17.4.0",
     "stylelint-config-standard": "40.0.0",
     "webpack": "5.105.4"