[Release] Bump version to 1.82.0-pre1 (on v1.82.x branch) (#42639)

Change was created by the release automation script. See go/grpc-release

[Release] Bump version to 1.81.1 (on v1.81.x branch) (#42584)

Change was created by the release automation script. See go/grpc-release

[Release] Bump version to 1.81.0 (on v1.81.x branch) (#42432)

Change was created by the release automation script. See go/grpc-release

[Release] Bump version to 1.81.0-pre1 (on v1.81.x branch) (#42378)

Change was created by the release automation script. See go/grpc-release

[Release] Bump version to 1.80.0 (on v1.80.x branch) (#41857)

Change was created by the release automation script. See
go/grpc-release.

[subchannel] fix crash in connection scaling code (#41853)

Backports #41845 to 1.80.

[Release] Bump version to 1.78.1 (on v1.78.x branch) (#41681)

Change was created by the release automation script. See go/grpc-release

[build] add missing includes (backport to 1.78.x) (#41518)

Backport #41351 to the v1.78.x branch to address
#41296 (comment)


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Co-authored-by: Mark D. Roth <roth@google.com>

[Release] Bump version to 1.78.0-pre2 (on v1.78.x branch) (#41397)

Change was created by the release automation script. See go/grpc-release

[Backport][v1.78.x][Fix][Build] Move xds-protos templates to the new …

…path (#41298)

Backport of #41297 to v1.78.x.
---
In #41261, templates weren't moved to the new path
`templates/py_xds_protos`, so they didn't render the updated version in
`py_xds_protos/grpc_version.py` correctly.

This resulted to fail with the following error:

```
Installing collected packages: xds-protos
Successfully installed xds-protos-1.77.0.dev0

+ /opt/python/cp313-cp313/bin/python -m build --no-isolation src/python/grpcio_csds
* Getting build dependencies for sdist...

ERROR Missing dependencies:
	xds-protos==1.78.0rc1
```

Note the difference in the expected and installed xds-protos version.