libtools-build-clojure.classpath: add maven-resolver-named-locks.jar

This may belong in some dependency's classpath, but maven added this
jar and we do need it.  When it's missing the errors look like this:

java.lang.NullPointerException: Cannot invoke "org.eclipse.aether.RepositorySystem.newLocalRepositoryManager(org.eclipse.aether.RepositorySystemSession, org.eclipse.aether.repository.LocalRepository)" because "system" is null
 at clojure.tools.deps.util.maven$make_session.invokeStatic (maven.clj:247)
    clojure.tools.deps.util.maven$make_session.invoke (maven.clj:242)
    clojure.tools.deps.extensions.maven$read_descriptor$fn__3059.invoke (maven.clj:137)
    clojure.tools.deps.util.session$retrieve$reify__2210.apply (session.clj:28)
    java.util.concurrent.ConcurrentHashMap.computeIfAbsent (ConcurrentHashMap.java:1708)
    clojure.tools.deps.util.session$retrieve.invokeStatic (session.clj:25)
    clojure.tools.deps.util.session$retrieve.invoke (session.clj:18)
    clojure.tools.deps.util.session$retrieve_local.invokeStatic (session.clj:35)
    clojure.tools.deps.util.session$retrieve_local.invoke (session.clj:30)
    clojure.tools.deps.extensions.maven$read_descriptor.invokeStatic (maven.clj:137)
    clojure.tools.deps.extensions.maven$read_descriptor.invoke (maven.clj:132)
    clojure.tools.deps.extensions.maven$eval3086$fn__3087.invoke (maven.clj:172)
    clojure.lang.MultiFn.invoke (MultiFn.java:244)
    clojure.tools.deps$expand_deps$children_task__2679$fn__2681$fn__2682.invoke (deps.clj:407)
    clojure.lang.AFn.applyToHelper (AFn.java:152)
    clojure.lang.AFn.applyTo (AFn.java:144)
    clojure.core$apply.invokeStatic (core.clj:667)
    clojure.core$with_bindings_STAR_.invokeStatic (core.clj:1990)
    clojure.core$with_bindings_STAR_.doInvoke (core.clj:1990)
    clojure.lang.RestFn.invoke (RestFn.java:428)
    clojure.lang.AFn.applyToHelper (AFn.java:156)
    clojure.lang.RestFn.applyTo (RestFn.java:135)
    clojure.core$apply.invokeStatic (core.clj:671)
    clojure.core$bound_fn_STAR_$fn__5837.doInvoke (core.clj:2020)
    clojure.lang.RestFn.invoke (RestFn.java:400)
    clojure.lang.AFn.call (AFn.java:18)
    java.util.concurrent.FutureTask.run (FutureTask.java:317)
    java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1144)
    java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:642)
    java.lang.Thread.run (Thread.java:1583)