requirements: update grpcio requirement from <1.79.0,>=1.60.0 to >=1.60.0,<1.81.0

[dependabot]

Updates the requirements on grpcio to permit the latest version.

Release notes

Sourced from grpcio's releases.

Release v1.80.0

This is release 1.80.0 (glimmering) of gRPC Core.

For gRPC documentation, see grpc.io. For previous releases, see Releases.

This release contains refinements, improvements, and bug fixes, with highlights listed below.

Core

• [ssl] Implement TLS private key signer in Python. (#41701)
• [TLS Credentials]: Private Key Offload Implementation. (#41606)
• Fix max sockaddr struct size on OpenBSD. (#40454)
• [core] Enable EventEngine for Python by default, and EventEngine fork support in Python and Ruby. (#41432)
• [TLS Credentials]: Create InMemoryCertificateProvider to update certificates independently. (#41484)
• [Ruby] Build/test ruby 4.0 and build native gems with Ruby 4.0 support. (#41324)
• [EventEngine] Remove an incorrect std::move in DNSServiceResolver constructor. (#41502)
• [RR and WRR] enable change to connect from a random index. (#41472)
• [xds] Implement gRFC A101. (#41051)

C++

• [C++] Add SNI override option to C++ channel credentials options API. (#41460)

C#

• [C# tools] Option to append Async to server side method names #39010. (#39797)
• [C# tools] Fix Grpc.Tools 2.69.0 stops working on ARM64 (#41543)

Objective-C

• [Fix][Compiler] Plugins fall back to the edition 2023 for older protobuf. (#41357)

PHP

• [PHP] Disable php infinite recursion check for callback from Core to PHP. (#41835)
• [PHP] Fix runtime error with PHp8.5 alpha because zend_exception_get_defaul…. (#40337)

Python

• [Python] Fix GRPC_TRACE not working when absl log initialized in cython. (#41814)
• Revert "[Python] Align GRPC_ENABLE_FORK_SUPPORT env defaults in core and python (#41455)". (#41769)
• [Python] Fix AsyncIO Server maximum_concurrent_rpcs enforcement preventing negative active_rpcs count. (#41532)
• [Python] Docs: correct grpc.Compression references. (#41705)

... (truncated)

Commits

• f5e2d6e [Release] Bump version to 1.80.0 (on v1.80.x branch) (#41857)
• 938cfec [subchannel connection scaling] fix when we reset backoff (#41935)
• 91778be [Backport][v1.80.x][Python] New _create method for aio.Metadata (#41888)
• f10b9f2 [bzlmod] upgrade rules_swift to avoid BCR CI breakage on Windows with bazel 7...
• be4c1c5 [subchannel] fix crash in connection scaling code (#41853)
• a71df73 [Release] Bump version to 1.80.0-pre1 (on v1.80.x branch) (#41844)
• 3ca09e4 [Python] Fix GRPC_TRACE and add test to check the GRPC_TRACE logs print (#41814)
• 260c6fd [PHP] Disable php infinite recursion check for callback from Core to PHP (#41...
• 50957c5 [Flakiness] Delete flaky iomgr fd_conservation_posix_test and create an Event...
• e1e1d0a [Bzlmod] Turn off bzlmod for PSM python tests. (#41810)
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[github-actions]

This PR causes the following changes to the html docs (ubuntu-latest-3.11):

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