Use nextest to run Miri in CI (#9629)

# Which issue does this PR close?

- Closes #NNN.

# Rationale for this change

Miri in CI is VERY slow (around 2.5 hours), but the github runners
actually have 4 vCPUs and some memory, so using nextest can give us some
speedup.

# What changes are included in this PR?

Install nextest in CI and then use it to run Miri

# Are these changes tested?

tested the script locally

# Are there any user-facing changes?

No

Author: AdamGS

.github/workflows/miri.sh

@@ -12,9 +12,8 @@ cargo miri setup
 cargo clean
 
 echo "Starting Arrow MIRI run..."
-cargo miri test -p arrow-buffer
-cargo miri test -p arrow-data --features ffi
-cargo miri test -p arrow-schema --features ffi
-cargo miri test -p arrow-ord
-cargo miri test -p arrow-array
-cargo miri test -p arrow-arith
+cargo miri nextest run \
+    -p arrow-buffer -p arrow-data \
+    -p arrow-schema -p arrow-ord \
+    -p arrow-array -p arrow-arith \
+    --features ffi --no-fail-fast

.github/workflows/miri.yaml

@@ -55,6 +55,9 @@ jobs:
           rustup toolchain install nightly --component miri
           rustup override set nightly
           cargo miri setup
+      - name: Set up nextest
+        run: |
+          cargo install cargo-nextest --version 0.9.132 --locked
       - name: Run Miri Checks
         env:
           RUST_BACKTRACE: full