chore: adding package cleanup action (#92)

Co-authored-by: Derek Roberts <[email protected]>

.github/workflows/merge-main.yml

@@ -153,3 +153,28 @@ jobs:
               <version>${{ needs.vars.outputs.semver }}</version>
             </dependency>
             ```
+
+
+  cleanup:
+    name: Dependency cleanup
+    needs: [tagging]
+    runs-on: ununtu-24.04
+    strategy:
+      matrix:
+        name: [core,spring,certextract]
+        include:
+          - name: core
+            type: 'maven'
+            package: 'ca.bc.gov.nrs-commons.forest-client-core'
+          - name: spring
+            type: 'maven'
+            package: 'ca.bc.gov.nrs-commons.forest-client-spring'
+          - name: certextract
+            type: 'container'
+            package: 'certextractor'
+    steps:
+      - uses: actions/delete-package-versions@v5
+        with:
+          package-name: ${{ matrix.package }}
+          package-type: ${{ matrix.type }}
+          min-versions-to-keep: 2