Upgrading org.bouncycastle:bcprov-jdk15to18 to 1.78

[devagarwal1803]

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• Backport Labels added.
• New functionality includes testing.
  • All tests pass
• New functionality has been documented.
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[prudhvigodithi]

Can we please merge this to unblock 2.16.0, there has been issue with whitesource recently, I also noticed other CI checks failing as well.
Thank you
@getsaurabh02

[psychbot]

The changes seems incomplete, Also i see an existing PR open for a CVE fix.
#656

[devagarwal1803]

We can go ahead by merging #656