CI: Place RISCOF dependency file properly

Author: jserv

requirements.txt renamed to .ci/requirements.txt

@@ -5,7 +5,7 @@
 set -e -u -o pipefail
 
 # Install RISCOF
-pip3 install -r requirements.txt
+pip3 install -r .ci/requirements.txt
 
 set -x
 

.ci/riscv-tests.sh

@@ -274,7 +274,7 @@ jobs:
           wget https://apt.llvm.org/llvm.sh
           chmod +x ./llvm.sh
           ./llvm.sh 18
-        # FIXME: gcc build fails on Aarch64/Linux hosts  
+        # FIXME: gcc build fails on Aarch64/Linux hosts
         env: |
           CC: clang-18
         # Append custom commands here