HADOOP-17563. Upgrade BouncyCastle to 1.68 (#3980)

[steveloughran]

Contributed by PJ Fanning

Description of PR

How was this patch tested?

For code changes:

• Does the title or this PR starts with the corresponding JIRA issue id (e.g. 'HADOOP-17799. Your PR title ...')?
• Object storage: have the integration tests been executed and the endpoint declared according to the connector-specific documentation?
• If adding new dependencies to the code, are these dependencies licensed in a way that is compatible for inclusion under ASF 2.0?
• If applicable, have you updated the LICENSE, LICENSE-binary, NOTICE-binary files?

[hadoop-yetus]

💔 -1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	0m 52s		Docker mode activated.
			_ Prechecks _
+1 💚	dupname	0m 0s		No case conflicting files found.
+0 🆗	codespell	0m 0s		codespell was not available.
+0 🆗	detsecrets	0m 0s		detect-secrets was not available.
+0 🆗	xmllint	0m 0s		xmllint was not available.
+0 🆗	shelldocs	0m 0s		Shelldocs was not available.
+1 💚	@author	0m 0s		The patch does not contain any @author tags.
-1 ❌	test4tests	0m 0s		The patch doesn't appear to include any new or modified tests. Please justify why no new tests are needed for this patch. Also please list what manual steps were performed to verify this patch.
			_ branch-3.3 Compile Tests _
+0 🆗	mvndep	15m 16s		Maven dependency ordering for branch
+1 💚	mvninstall	26m 58s		branch-3.3 passed
+1 💚	compile	19m 6s		branch-3.3 passed
+1 💚	mvnsite	21m 20s		branch-3.3 passed
+1 💚	javadoc	7m 6s		branch-3.3 passed
+1 💚	shadedclient	32m 11s		branch has no errors when building and testing our client artifacts.
			_ Patch Compile Tests _
+0 🆗	mvndep	0m 31s		Maven dependency ordering for patch
+1 💚	mvninstall	24m 53s		the patch passed
+1 💚	compile	18m 33s		the patch passed
+1 💚	javac	18m 33s		the patch passed
+1 💚	blanks	0m 0s		The patch has no blanks issues.
+1 💚	mvnsite	21m 3s		the patch passed
+1 💚	shellcheck	0m 0s		No new issues.
+1 💚	javadoc	6m 56s		the patch passed
+1 💚	shadedclient	32m 54s		patch has no errors when building and testing our client artifacts.
			_ Other Tests _
-1 ❌	unit	707m 41s	/patch-unit-root.txt	root in the patch passed.
+1 💚	asflicense	2m 0s		The patch does not generate ASF License warnings.
		926m 19s

Reason	Tests
Failed junit tests	hadoop.hdfs.server.datanode.TestDataNodeRollingUpgrade
	hadoop.hdfs.TestFileCreation
	hadoop.hdfs.tools.TestDFSAdmin
	hadoop.yarn.sls.appmaster.TestAMSimulator

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-5015/4/artifact/out/Dockerfile
GITHUB PR	#5015
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient codespell detsecrets xmllint shellcheck shelldocs
uname	Linux 96ba0915b1ba 4.15.0-191-generic #202-Ubuntu SMP Thu Aug 4 01:49:29 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/bin/hadoop.sh
git revision	branch-3.3 / 98c7a56
Default Java	Private Build-1.8.0_342-8u342-b07-0ubuntu1~18.04-b07
Test Results	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-5015/4/testReport/
Max. process+thread count	2718 (vs. ulimit of 5500)
modules	C: hadoop-project . U: .
Console output	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-5015/4/console
versions	git=2.17.1 maven=3.6.0 shellcheck=0.4.6
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[steveloughran]

flaky tests; ignoring