History of b64url 1 change

In crates/hub/src/oidc.rs, lines 207–217 on 5436f0dd942938b88d95fa7451994bfec9477a11cea9c9d15df6854bd9f5a828. Every change that wrote or deleted one of these lines, or deleted a line from between them. Exact, because each line keeps its identity across edits; edits elsewhere in the file are not here. Also: oxy log -L 207,217:crates/hub/src/oidc.rs.