[SHIRO-882] Upgrade to apache pom parent 26

[bdemers]

Cherry-picked from: #356

[bmarwell]

Is this the root cause?

15:20:52.854 [main] WARN  org.apache.shiro.web.config.IniFilterChainResolverFactory - The [filters] section has been deprecated and will be removed in a future release!  Please move all object configuration (filters and all other objects) to the [main] section.
15:20:52.860 [main] ERROR org.apache.shiro.web.servlet.AbstractFilter - Unable to start Filter: [There is no servlet context resource corresponding to configPath '/WEB-INF/foo.ini'  If the resource is located elsewhere (not immediately resolveable in the servlet context), specify an appropriate classpath:, url:, or file: resource prefix accordingly.].
org.apache.shiro.config.ConfigurationException: There is no servlet context resource corresponding to configPath '/WEB-INF/foo.ini'  If the resource is located elsewhere (not immediately resolveable in the servlet context), specify an appropriate classpath:, url:, or file: resource prefix accordingly.
	at org.apache.shiro.web.servlet.IniShiroFilter.convertPathToIni(IniShiroFilter.java:347) ~[classes/:?]

[bdemers]

I'm not sure, it's building locally fine 😰