otatools: added missing shared library for make_ext4fs

Added the missing shared library libpcre2.so for make_ext4fs
in the otatools.zip.
Standalone signing the images with otatools zip is not working
due to missing library for make_ext4fs.

Test: tools/releasetools/sign_target_files_apks
    -p <extracted ota-tools.zip folder>
    --extra_signapk_args=-f /etc/opt/cert_data.dat
    -v
    --replace_verity_private_key ~/build/target/product/security/verity
    --replace_verity_public_key ~/build/target/product/security/verity.x509.pem
    -k <key maping>
    <input target files zip>
    <output target files zip>

Change-Id: I4fc71a1c710f3075bb3bdb90d915538526004ee6
diff --git a/core/Makefile b/core/Makefile
index c409458..be23ca2 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -1765,7 +1765,8 @@
   $(HOST_LIBRARY_PATH)/libprotobuf-cpp-lite$(HOST_SHLIB_SUFFIX) \
   $(HOST_LIBRARY_PATH)/libssl-host$(HOST_SHLIB_SUFFIX) \
   $(HOST_LIBRARY_PATH)/libz-host$(HOST_SHLIB_SUFFIX) \
-  $(HOST_LIBRARY_PATH)/libbase$(HOST_SHLIB_SUFFIX)
+  $(HOST_LIBRARY_PATH)/libbase$(HOST_SHLIB_SUFFIX) \
+  $(HOST_LIBRARY_PATH)/libpcre2$(HOST_SHLIB_SUFFIX)
 
 .PHONY: otatools
 otatools: $(OTATOOLS)