Take semver-compatible dependency updates

[djc]

Mid-week update for platforms 3.12.0:

diff --git a/src/dist/target_tuple/known.rs b/src/dist/target_tuple/known.rs
index 4c60eb2f..b034a772 100644
--- a/src/dist/target_tuple/known.rs
+++ b/src/dist/target_tuple/known.rs
@@ -170,6 +170,7 @@ pub static LIST_ENVS: &[&str] = &[
     "gnuasan",
     "gnueabi",
     "gnueabihf",
+    "gnuelfv2",
     "gnullvm",
     "gnumsan",
     "gnuspe",

[rami3l]

LGTM :)

View changes since this review