Update version of DTLS library

Make sure we use a version of the DTLS library that contains the following fingerprinting fixes:

• Only send supported_groups extension in ClientHello
• Do not include IP addresses as SNI values

These changes have been merged upstream into pion/dtls.

The changes in go.sum were the result of go mod tidy.

requested review from @meskio

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• b7a49f59 - Update version of DTLS library

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(trying to fix CI issues)

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• 738bd464 - Update version of DTLS library

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• 9c11e479 - Update go versions in CI tests

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Okay I think it's ready. There's a commit in there that updates the versions of Go we're testing with CI. I think it makes sense, and it fixes an issue where the maintainers of go/x/net are not interested in supporting old versions of Go.

mentioned in issue #40014

approved this merge request

I think is good to merge.

merged

mentioned in commit dcf/snowflake@aeb0794d

mentioned in merge request !68 (merged)

mentioned in issue #40083 (closed)