CI: Print out installed components

In preparation to run clippy, print out the tools we already have.

Signed-off-by: David Brown <[email protected]>

Author: d3zd3z

.github/workflows/build.yml

@@ -54,6 +54,7 @@ jobs:
           rustup target add thumbv7em-none-eabi
           rustup target add thumbv7m-none-eabi
           rustup target add thumbv8m.main-none-eabi
+          rustup component list --installed
 
       # Note that Renode is only provided for x86_64 targets.  This matches the github runners.
       - name: Install Renode