devctr: pin kani to 0.64.0

Kani 0.65.0 crashes with ICE when trying to verify firecracker, see also
model-checking/kani#4322

Signed-off-by: Patrick Roy <[email protected]>

Author: roypat

tools/devctr/Dockerfile

@@ -122,7 +122,7 @@ RUN curl https://sh.rustup.rs -sSf | sh -s -- -y --profile minimal --default-too
     && rustup component add llvm-tools-preview clippy rustfmt \
     && cargo install --locked cargo-audit grcov cargo-sort cargo-afl \
     && cargo install --locked cargo-deny --version 0.17.0 \
-    && cargo install --locked kani-verifier && cargo kani setup \
+    && cargo install --locked kani-verifier --version 0.64.0 && cargo kani setup \
     \
     && NIGHTLY_TOOLCHAIN=$(rustup toolchain list | grep nightly | tr -d '\n') \
     && rustup component add rust-src --toolchain "$NIGHTLY_TOOLCHAIN" \