Since crypto removal of github.com (https://githubengineering.com/crypto-removal-notice/), when trying to connect to github API, causes SSL error in connection. Full trace:

Feb 27, 2018 7:41:00 AM org.jenkinsci.plugins.ghprb.GhprbRootAction$2 run
SEVERE: Unable to handle PR# 344 for repo: XXXX
java.lang.Error: org.kohsuke.github.HttpException: Server returned HTTP response code: -1, message: 'null' for URL: https://api.github.com/repos/XXXX/pulls/344/files
    at org.kohsuke.github.Requester$PagingIterator.fetch(Requester.java:516)
    at org.kohsuke.github.Requester$PagingIterator.hasNext(Requester.java:481)
    at org.kohsuke.github.PagedIterator.fetch(PagedIterator.java:44)
    at org.kohsuke.github.PagedIterator.hasNext(PagedIterator.java:32)
    at org.jenkinsci.plugins.ghprb.GhprbPullRequest.containsWatchedPaths(GhprbPullRequest.java:439)
    at org.jenkinsci.plugins.ghprb.GhprbPullRequest.tryBuild(GhprbPullRequest.java:502)
    at org.jenkinsci.plugins.ghprb.GhprbPullRequest.check(GhprbPullRequest.java:198)
    at org.jenkinsci.plugins.ghprb.GhprbRepository.onPullRequestHook(GhprbRepository.java:394)
    at org.jenkinsci.plugins.ghprb.GhprbTrigger.handlePR(GhprbTrigger.java:746)
    at org.jenkinsci.plugins.ghprb.GhprbRootAction$2.run(GhprbRootAction.java:257)
Caused by: org.kohsuke.github.HttpException: Server returned HTTP response code: -1, message: 'null' for URL: https://api.github.com/repos/Telefonica/vamps/pulls/344/files
    at org.kohsuke.github.Requester.parse(Requester.java:633)
    at org.kohsuke.github.Requester.parse(Requester.java:594)
    at org.kohsuke.github.Requester.access$200(Requester.java:73)
    at org.kohsuke.github.Requester$PagingIterator.fetch(Requester.java:505)
    ... 9 more
Caused by: javax.net.ssl.SSLException: Received fatal alert: protocol_version
    at sun.security.ssl.Alerts.getSSLException(Alerts.java:208)
    at sun.security.ssl.Alerts.getSSLException(Alerts.java:154)
    at sun.security.ssl.SSLSocketImpl.recvAlert(SSLSocketImpl.java:2023)
    at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1125)
    at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1375)
    at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1403)
    at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1387)
    at sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:559)
    at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:185)
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1513)
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1441)
    at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:480)
    at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:338)
    at org.kohsuke.github.Requester.parse(Requester.java:602)
    ... 12 more