Update Jerboa toolchain and repository links

ober

234f39028822a131befe6f03bea99fa67d36b743

diff --git a/Makefile b/Makefile
index 35397c4..ed231aa 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,7 @@
 # crate, so building jerboa-gitlab needs only jerbuild + a C compiler + cargo.
 # If no jerbuild is found, build/test targets fetch the release toolchain into
 # .jerboa/bin using support/ensure-jerboa.sh.
-JERBOA_VERSION ?= v0.2.3
+JERBOA_VERSION ?= v0.2.8
 JERBOA_TOOL_DIR ?= $(CURDIR)/.jerboa/bin
 JERBUILD ?= $(shell if [ -x ./jerbuild ]; then echo ./jerbuild; \
 	elif [ -x "$(JERBOA_TOOL_DIR)/jerbuild" ]; then echo "$(JERBOA_TOOL_DIR)/jerbuild"; \
diff --git a/README.md b/README.md
index 594b50b..354bf51 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # jerboa-gitlab — `jgl`
 
-A small GitLab CLI written in [Jerboa](https://git.sr.ht/~lisp/jerboa): fetch
+A small GitLab CLI written in [Jerboa](https://git.jerboa.sh/ober/jerboa): fetch
 issues, query CI/CD, and archive issues to markdown. It talks to the GitLab
 REST API v4 over HTTPS (Rustls, via the bundled `jerboa-native` crate).
 
@@ -19,7 +19,7 @@ queries and a JSON output mode.
 
 ## Build
 
-`jgl` builds with just [`jerbuild`](https://git.sr.ht/~lisp/jerboa) — it bundles
+`jgl` builds with just [`jerbuild`](https://git.jerboa.sh/ober/jerboa) — it bundles
 Chez Scheme, the Jerboa stdlib, and the `jerboa-native` Rust crate (Rustls
 HTTPS). You need `jerbuild`, a C compiler, and `cargo`.