Add openssl-devel dependency for Fedora

[DF2NwasJiMYLNFyAOQarZtfPPj0qXh4G]

Without the openssl-devel package, the following error message comes up:

git submodule update
make -C mec-tools
make[1]: Entering directory '/tmp/thinkpad-ec/mec-tools'
cc -Wall -O2 mec_encrypt.c -o mec_encrypt -lcrypto
make[1]: Leaving directory '/tmp/thinkpad-ec/mec-tools'
mec_encrypt.c:6:10: fatal error: openssl/blowfish.h: No such file or directory
    6 | #include <openssl/blowfish.h>
      |          ^~~~~~~~~~~~~~~~~~~~
compilation terminated.
make[1]: *** [Makefile:8: mec_encrypt] Error 1
make: *** [Makefile:294: mec-tools/mec_encrypt] Error 2