Adapt labeler.yml to v4 syntax

[ci skip] Add labels to PRs with potential ABI breaks

ABI breaks are not supposed to happen after feature freeze, i.e. when
the PHP API numbers have been bumped. To make it easier to no

[ci skip] Add labels to PRs with potential ABI breaks

ABI breaks are not supposed to happen after feature freeze, i.e. when
the PHP API numbers have been bumped. To make it easier to notice
inadvertent ABI breaks, we automatically add an "ABI break" label to
all PRs which modify public (aka. installed) header files. Some of
these modifications do not constitute an ABI break (e.g. adding a
comment to a header file), but we rely on natural intelligence to sort
that out. That means these labels should be removed manually, if they
are not appropriate, but if they are, the PR should not be merged into
any stable branch. For the master branch, where ABI breaks are
permissible, the labels should still be removed if irrelevant, but kept
when the PR is merged.

Since tests are futile[1], we leave that to further (test) PRs.

[1] <https://github.com/php/php-src/pull/15682#issuecomment-2323060586>

Closes GH-15682.

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github: add build scripts to "Category: Build System" label (#11474)

* github: add build scripts to "Category: Build System" label

* github: add buildconf, configure.ac and win32 bu

github: add build scripts to "Category: Build System" label (#11474)

* github: add build scripts to "Category: Build System" label

* github: add buildconf, configure.ac and win32 build folder to build system category

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[ci skip] Add the 'random' extension to labeler.yml (#9050)

see 4d8dd8d258ff365b146bcadcb277ede8992706d0

Fix labeler selection of SAPIs

[skip ci] Auto labeling for PRs (#8693)