[nongnu] elpa/pdf-tools updated (007fcf1fe9 -> 550943f133)

[ELPA Syncer]

elpasync pushed a change to branch elpa/pdf-tools.

      from  007fcf1fe9 Add Emacs 28 to CircleCI build matrix
       new  d63a1e7d87 Use mkstemp instead of tempnam
       new  ebcfc7c927 Add epdfinfo prereqs for openSUSE in the README
       new  550943f133 Clarify Fedora prereqs in the README


Summary of changes:
 README.org        | 22 +++++++++++++++++++++-
 server/epdfinfo.c | 29 +++++++++++------------------
 2 files changed, 32 insertions(+), 19 deletions(-)