GitHub Actions: relax the test condition about ARM executbale format

We expected "ELF 32-bit LSB pie executable, ARM, EABI5" as the output
of `file ctags'.

However, after switching the package management tool on ubuntu from
brew to apt, `file ctags' reports "ELF 32-bit LSB shared object, ARM,
EABI5".

Signed-off-by: Masatake YAMATO <[email protected]>

Author: masatake

.github/workflows/cross-compile-android-ndk-on-ubuntu.yml

@@ -77,4 +77,5 @@ jobs:
 
       - run: make V=1
 
-      - run: file ctags | grep "ELF 32-bit LSB pie executable, ARM, EABI5"
+      # pie executable or shared object
+      - run: file ctags | grep 'ELF 32-bit LSB .*, ARM, EABI5'