pam-sys

chore: bump crate-ci/azure-pipelines

Prepare v1.0.0-alpha5

chore: add missing changelog entry

deps: bump bindgen to 0.69 and disable default features (credits to @zombiepigdragon)

Added __gnuc_va_list to the list of blocked types since this type exists on at least some Linux platforms, and prevents pam-sys from compiling without this exclusion.