[3.10] bpo-44116: Add GC support to _csv heap types (GH-26074)

[miss-islington]

(cherry picked from commit e5ba1fe)

Co-authored-by: Erlend Egeberg Aasland erlend.aasland@innova.no

https://bugs.python.org/issue44116

[miss-islington]

@erlend-aasland and @pablogsal: Status check is done, and it's a success ✅ .

[miss-islington]

@erlend-aasland and @pablogsal: Status check is done, and it's a success ✅ .

[miss-islington]

@erlend-aasland and @pablogsal: Status check is done, and it's a success ✅ .

[erlend-aasland]

Can I add the automerge label, @pablogsal?

[pablogsal]

Backports are automatically merged when all CI passed if a core dev approves :)

[erlend-aasland]

Backports are automatically merged when all CI passed if a core dev approves :)

Convenient! :)

[erlend-aasland]

Looks like Miss Islington needs a bugfix ;) #automerge

[pablogsal]

CC: @Mariatta

Seems that Miss islington didn't merge this PR even if all test passed :(

[erlend-aasland]

Perhaps it is intentional: python/miss-islington#253

(I just skimmed the "status changed" code, so I might be wrong.)