fix: avoid issue with case sensitivity of repo names (#1179)

* fix: avoid issue with case sensitivity in condition

* chore: upgrade jest to v28

Author: peter-evans

__test__/integration-tests.sh

@@ -10,7 +10,7 @@ if [[ "$(docker images -q $IMAGE 2> /dev/null)" == "" || $ARG1 == "build" ]]; th
     cat > Dockerfile << EOF
 FROM node:12-alpine
 RUN apk --no-cache add git git-daemon
-RUN npm install jest --global
+RUN npm install jest jest-environment-jsdom --global
 WORKDIR /cpr
 COPY __test__/entrypoint.sh /entrypoint.sh
 ENTRYPOINT ["/entrypoint.sh"]

dist/index.js

@@ -968,7 +968,7 @@ class GitHubHelper {
             }
             catch (e) {
                 if (e.message &&
-                    e.message.includes(`A pull request already exists for ${headBranch}`)) {
+                    e.message.includes(`A pull request already exists for`)) {
                     core.info(`A pull request already exists for ${headBranch}`);
                 }
                 else {