Bump deps/curl from `b4d73e6` to `8ca6030`

[dependabot[bot]]

Bumps deps/curl from b4d73e6 to 8ca6030.

Commits

• 8ca6030 RELEASE-NOTES: synced
• 28fa417 autotools: fix --with-ca-embed build rule
• 79f0007 setopt: remove superfluous use of ternary expressions
• 381de75 CURLMOPT_TIMERFUNCTION.m: emphasize that only a single timer should run
• 61e48b4 vtls: fix Curl_ssl_conn_config_match doc param
• 70d3a9b http2: when uploading data from stdin, fix eos forwarding
• 9dc0770 cmake: ensure CURL_USE_OPENSSL/USE_OPENSSL_QUIC are set in sync
• b29caf0 GHA/macOS: add an -e test
• a610bb8 test537: cap the rlimit max this test runs
• 283af03 QUIC: on connect, keep on trying on draining server
• Additional commits viewable in compare view

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