Upgrade JGit to 4.5.6.201903121547-r

Includes fixes for packfile list corruption during GC [1].

[1] https://bugs.eclipse.org/bugs/show_bug.cgi?id=544199

Bug: Issue 10562
Change-Id: I6b1a6da355884f94b68cce5ab11f19d9d282017a
diff --git a/lib/JGIT_VERSION b/lib/JGIT_VERSION
index 7d1e527..37d0e4b 100644
--- a/lib/JGIT_VERSION
+++ b/lib/JGIT_VERSION
@@ -1,6 +1,6 @@
 include_defs('//lib/maven.defs')
 
 REPO = MAVEN_CENTRAL # Leave here even if set to MAVEN_CENTRAL.
-VERS = '4.5.5.201812240535-r'
+VERS = '4.5.6.201903121547-r'
 DOC_VERS = VERS # Set to VERS unless using a snapshot
 JGIT_DOC_URL="http://download.eclipse.org/jgit/site/" + DOC_VERS + "/apidocs"
diff --git a/lib/jgit/org.eclipse.jgit.archive/BUCK b/lib/jgit/org.eclipse.jgit.archive/BUCK
index 54f7e53..d2e5094 100644
--- a/lib/jgit/org.eclipse.jgit.archive/BUCK
+++ b/lib/jgit/org.eclipse.jgit.archive/BUCK
@@ -4,7 +4,7 @@
 maven_jar(
   name = 'jgit-archive',
   id = 'org.eclipse.jgit:org.eclipse.jgit.archive:' + VERS,
-  sha1 = 'd64327d788ae43d79eb4e42d2432646c7b485789',
+  sha1 = '9681cf33d759e483de00df738de7aaf4f53f978d',
   license = 'jgit',
   repository = REPO,
   deps = ['//lib/jgit/org.eclipse.jgit:jgit'],
diff --git a/lib/jgit/org.eclipse.jgit.http.server/BUCK b/lib/jgit/org.eclipse.jgit.http.server/BUCK
index 3ca44b8..7daeda2 100644
--- a/lib/jgit/org.eclipse.jgit.http.server/BUCK
+++ b/lib/jgit/org.eclipse.jgit.http.server/BUCK
@@ -4,7 +4,7 @@
 maven_jar(
   name = 'jgit-servlet',
   id = 'org.eclipse.jgit:org.eclipse.jgit.http.server:' + VERS,
-  sha1 = '6498fa4f4bd5db11d3069952540b68a9aef024c2',
+  sha1 = 'a2c6a6494fa622cf21a5f307635907c2da8db409',
   license = 'jgit',
   repository = REPO,
   deps = ['//lib/jgit/org.eclipse.jgit:jgit'],
diff --git a/lib/jgit/org.eclipse.jgit.junit/BUCK b/lib/jgit/org.eclipse.jgit.junit/BUCK
index 5ca7f0d..b64f9bf 100644
--- a/lib/jgit/org.eclipse.jgit.junit/BUCK
+++ b/lib/jgit/org.eclipse.jgit.junit/BUCK
@@ -4,7 +4,7 @@
 maven_jar(
   name = 'junit',
   id = 'org.eclipse.jgit:org.eclipse.jgit.junit:' + VERS,
-  sha1 = '50c36e367e7df961c1acc9308b7d52ea21a73d91',
+  sha1 = '9765775e417c379342c86b4d6d6b1c82fe7c3eb3',
   license = 'DO_NOT_DISTRIBUTE',
   repository = REPO,
   unsign = True,
diff --git a/lib/jgit/org.eclipse.jgit/BUCK b/lib/jgit/org.eclipse.jgit/BUCK
index 6d4a2e7..67e199b 100644
--- a/lib/jgit/org.eclipse.jgit/BUCK
+++ b/lib/jgit/org.eclipse.jgit/BUCK
@@ -4,8 +4,8 @@
 maven_jar(
   name = 'jgit',
   id = 'org.eclipse.jgit:org.eclipse.jgit:' + VERS,
-  bin_sha1 = '1dac8dd7deb4ec72939fe30cd6fd57c22fd4a403',
-  src_sha1 = '6c5fe5a2bd6b12571d15984916463f2f28223a93',
+  bin_sha1 = '684f7c9066c5b14e149387df7bff6250139b9a9b',
+  src_sha1 = 'b6cfef262b2725655c5fe2ff202398a47224a5c6',
   license = 'jgit',
   repository = REPO,
   unsign = True,