Bump Iris.

opam

@@ -9,5 +9,5 @@ build: [make "-j%{jobs}%"]
 install: [make "install"]
 remove: [ "sh" "-c" "rm -rf '%{lib}%/coq/user-contrib/actris" ]
 depends: [
-  "coq-iris" { (= "dev.2020-04-24.0.9cc3cc77") | (= "dev") }
+  "coq-iris" { (= "dev.2020-05-13.0.635cdf1e") | (= "dev") }
 ]

theories/utils/llist.v

@@ -242,7 +242,7 @@ Lemma lsplit_spec l xs :
 Proof.
   iIntros (Φ) "Hl HΦ". wp_lam.
   wp_apply (llength_spec with "Hl"); iIntros "Hl". wp_pures.
-  rewrite Z.quot_div_nonneg; [|lia..]. rewrite -(Z2Nat_inj_div _ 2).
+  rewrite Z.quot_div_nonneg; [|lia..]. rewrite -(Nat2Z_inj_div _ 2).
   wp_apply (lsplit_at_spec with "Hl"); iIntros (k) "[Hl Hk]".
   iApply "HΦ". iFrame. by rewrite take_drop.
 Qed.