History of b64url 1 change

In crates/hub/src/oidc.rs, lines 207–217 on 5360cea36c30a7236e2fb61a89c48f7cc65132f1af97caae4780e8b664ee15ea. 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.