Where does this shibboleth-repo come from I tried to upgrade my plugin from 8.5.3 to jira 9.12.2 and started getting this warning

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[WARNING] net.minidev:json-smart/maven-metadata.xmlfailed to transfer from Index of /maven/releases during a previous attempt. This failure was cached in the local repository and resolution will not be reattempted until the update interval of shibboleth-repo has elapsed or updates are forced. Original error: Could not transfer metadata net.minidev:json-smart/maven-metadata.xml from/to shibboleth-repo (Index of /maven/releases): transfer failed for https://build.shibboleth.net/nexus/content/repositories/releases/net/minidev/json-smart/maven-metadata.xml

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Hi Damon, I was having the same issue and having a look at some documentation from Shibboleth (they create opensource SAML packages) but they have moved some of their repos and hence old POMs or Super POMs might still reference the old ones. Best thing to do is to force your settings.xml to go to the new one, here is what you would need to add to your settings.xml

                <repository>
                    <id>shibboleth-repo</id>
                    <name>Shibboleth Releases Repository</name>
                    <url>https://build.shibboleth.net/maven/releases/</url>
                    <releases>
                        <enabled>true</enabled>
                        <checksumPolicy>warn</checksumPolicy>
                    </releases>
                    <snapshots>
                        <enabled>false</enabled>
                    </snapshots>
                </repository>

For more info about other repos that have moved checkout this document they published.

Hope that helps!