chore(ci): drop sha256sums.txt from release

GitHub provides asset digests natively these days.

Author: scop

.github/workflows/release-please.yaml

@@ -46,12 +46,11 @@ jobs:
         if: steps.release.outputs.release_created
         run: |
           set -x
-          gh release upload ${RELEASE_PLEASE_TAG_NAME} \
-            bash-completion-$(cat version.txt).tar.xz sha256sums.txt
+          gh release upload ${RELEASE_PLEASE_TAG_NAME} bash-completion-*.tar.xz
         env:
           GH_TOKEN: ${{github.token}}
           RELEASE_PLEASE_TAG_NAME: ${{steps.release.outputs.tag_name}}
       - uses: actions/attest@59d89421af93a897026c735860bf21b6eb4f7b26 # v4.1.0
         if: steps.release.outputs.release_created
         with:
-          subject-checksums: sha256sums.txt
+          subject-path: bash-completion-*.tar.xz

.gitignore

@@ -11,7 +11,6 @@ pytestdebug.log
 /bash_completion.sh
 /.mise.local.toml
 /.mise.*.local.toml
-/sha256sums.txt
 /venv/
 
 # Files generated by autotools

make-release.sh

@@ -6,4 +6,3 @@ autoreconf -i
 # TODO: Consider using the already created and tested tarball from the CI
 # workflow
 make distcheck
-sha256sum bash-completion-*.tar.* >sha256sums.txt