Add signature from diabonas for heftig

keyring/packager/heftig/A2FF3A36AAA56654109064AB19802F8B0D70FC30/uid/Jan_Alexander_Steffens__heftig___heftig@archlinux.org_85a5903b/certification/75BD80E4D834509F6E740257B1B73B02CC52A02A.asc

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+=ekHT
+-----END PGP SIGNATURE-----