Merge pull request #20777 from github/revert-20745-release-prep/2.23.4

Revert "Release preparation for version 2.23.4"

Author: mbg

actions/ql/lib/CHANGELOG.md

@@ -1,2 +1,2 @@
 ---
-lastReleaseVersion: 0.4.20
+lastReleaseVersion: 0.4.19

actions/ql/lib/change-notes/released/0.4.20.md

@@ -1,5 +1,5 @@
 name: codeql/actions-all
-version: 0.4.20
+version: 0.4.20-dev
 library: true
 warnOnImplicitThis: true
 dependencies:

actions/ql/lib/codeql-pack.release.yml

@@ -1,2 +1,2 @@
 ---
-lastReleaseVersion: 0.6.12
+lastReleaseVersion: 0.6.11

actions/ql/lib/qlpack.yml

@@ -1,5 +1,5 @@
 name: codeql/actions-queries
-version: 0.6.12
+version: 0.6.12-dev
 library: false
 warnOnImplicitThis: true
 groups: [actions, queries]