Fix ALTER TABLE DROP EXPRESSION with inheritance hierarchy

Applying: Fix ALTER TABLE DROP EXPRESSION for inheritance hierarchy
Using index info to reconstruct a base tree...
M	src/backend/commands/tablecmds.c
Falling back to patching base and 3-way merge...
Auto-merging src/backend/commands/tablecmds.c
CONFLICT (content): Merge conflict in src/backend/commands/tablecmds.c
Patch failed at 0001 Fix ALTER TABLE DROP EXPRESSION for inheritance hierarchy

/ci/repo/worktrees/worktree/rebase-apply/patch:20: indent with spaces.
    find_inheritance_children(RelationGetRelid(rel), lockmode))
/ci/repo/worktrees/worktree/rebase-apply/patch:21: indent with spaces.
    ereport(ERROR,
/ci/repo/worktrees/worktree/rebase-apply/patch:22: indent with spaces.
            (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
/ci/repo/worktrees/worktree/rebase-apply/patch:23: indent with spaces.
             errmsg("ALTER TABLE / DROP EXPRESSION must be applied to child tables too"),
/ci/repo/worktrees/worktree/rebase-apply/patch:24: indent with spaces.
             errhint("Do not specify the ONLY keyword.")));
warning: 5 lines add whitespace errors.
error: Failed to merge in the changes.
hint: Use 'git am --show-current-patch=diff' to see the failed patch
hint: When you have resolved this problem, run "git am --continue".
hint: If you prefer to skip this patch, run "git am --skip" instead.
hint: To restore the original branch and stop patching, run "git am --abort".
hint: Disable this message with "git config advice.mergeConflict false"