Update Jerboa release references

ober

89ae8124fa7e5ebb426eabc2ec97281d375c4dcb

diff --git a/Makefile b/Makefile
index fce22db..757c1a2 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-JERBOA_VERSION ?= v0.2.3
+JERBOA_VERSION ?= v0.2.8
 JERBOA_TOOL_DIR ?= $(CURDIR)/.jerboa/bin
 JERBUILD ?= $(shell if [ -x "$(CURDIR)/../jerboa/dist/jerbuild" ]; then printf '%s\n' "$(CURDIR)/../jerboa/dist/jerbuild"; elif command -v jerbuild >/dev/null 2>&1; then command -v jerbuild; else printf '%s\n' "$(JERBOA_TOOL_DIR)/jerbuild"; fi)
 SIBLING_JERBOA := $(realpath $(CURDIR)/../jerboa)
diff --git a/README.md b/README.md
index 0e3eb50..99bb887 100644
--- a/README.md
+++ b/README.md
@@ -77,5 +77,5 @@ release decision.
 
 Apache License 2.0.
 
-[Jerboa]: https://git.sr.ht/~lisp/jerboa
+[Jerboa]: https://git.jerboa.sh/ober/jerboa
 [age]: https://github.com/FiloSottile/age