chore: cut ${GITHUB_BASE_REF}

Signed-off-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: SachinSahu431

CHANGELOG.md

@@ -1,5 +1,6 @@
 ## Unreleased
-
+* [CHANGE] Add PR template for changelog generation. (#46, @SachinSahu431)
+* [ENHANCEMENT] Update gen-chlog.sh file (#47, @SachinSahu431)
 ## 1.19.0 / 2023-02-27
 
 The module `prometheus/common v0.48.0` introduced an incompatibility when used together with client_golang (See https://github.com/prometheus/client_golang/pull/1448 for more details). If your project uses client_golang and you want to use `prometheus/common v0.48.0` or higher, please update client_golang to v1.19.0.