build(deps): bump golang.org/x/net from 0.21.0 to 0.23.0

[dependabot]

Bumps golang.org/x/net from 0.21.0 to 0.23.0.

Commits

• c48da13 http2: fix TestServerContinuationFlood flakes
• 762b58d http2: fix tipos in comment
• ba87210 http2: close connections when receiving too many headers
• ebc8168 all: fix some typos
• 3678185 http2: make TestCanonicalHeaderCacheGrowth faster
• 448c44f http2: remove clientTester
• c7877ac http2: convert the remaining clientTester tests to testClientConn
• d8870b0 http2: use synthetic time in TestIdleConnTimeout
• d73acff http2: only set up deadline when Server.IdleTimeout is positive
• 89f602b http2: validate client/outgoing trailers
• Additional commits viewable in compare view

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[gopherbot]

This PR (HEAD: dd15397) has been imported to Gerrit for code review.

Please visit Gerrit at https://go-review.googlesource.com/c/crypto/+/580336.

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[dependabot]

OK, I won't notify you again about this release, but will get in touch when a new version is available. If you'd rather skip all updates until the next major or minor version, let me know by commenting @dependabot ignore this major version or @dependabot ignore this minor version.

If you change your mind, just re-open this PR and I'll resolve any conflicts on it.