Update workflows to Ubuntu 20.04, as 18.04 does not have the RISC-V toolchain we need.
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6631920..f62bca8 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,9 +16,9 @@
# Using ubuntu-latest can cause breakage when ubuntu-latest is updated to
# point at a new Ubuntu version. Instead, explicitly specify the version, so
# we can update when we need to. This *could* break if we don't update it
- # until support for 18.04 is dropped, but it is likely we'll have a reason
+ # until support for 20.04 is dropped, but it is likely we'll have a reason
# to update to a newer Ubuntu before then anyway.
- runs-on: ubuntu-18.04
+ runs-on: ubuntu-20.04
steps:
# Clones a single commit from the libtock-rs repository. The commit cloned
diff --git a/.github/workflows/size-diff.yml b/.github/workflows/size-diff.yml
index b991c5f..33a0870 100644
--- a/.github/workflows/size-diff.yml
+++ b/.github/workflows/size-diff.yml
@@ -17,9 +17,9 @@
# Using ubuntu-latest can cause breakage when ubuntu-latest is updated to
# point at a new Ubuntu version. Instead, explicitly specify the version, so
# we can update when we need to. This *could* break if we don't update it
- # until support for 18.04 is dropped, but it is likely we'll have a reason
+ # until support for 20.04 is dropped, but it is likely we'll have a reason
# to update to a newer Ubuntu before then anyway.
- runs-on: ubuntu-18.04
+ runs-on: ubuntu-20.04
steps:
# Clones a single commit from the libtock-rs repository. The commit cloned
