Support changes in citeproc for Pandoc 3.1.7 and above #615

Job	Run time
windows-latest (release) [Pandoc 3.1.9]	11m 15s
macOS-latest (release) [Pandoc 3.1.9]	12m 32s
ubuntu-latest (release) [Pandoc devel]	6m 22s
ubuntu-latest (release) [Pandoc 3.1.7]	8m 23s
ubuntu-latest (release) [Pandoc 2.19.2]	12m 29s
ubuntu-latest (release) [Pandoc 2.18]	12m 57s
ubuntu-latest (release) [Pandoc 2.17.1.1]	9m 36s
ubuntu-latest (release) [Pandoc 2.16.2]	9m 49s
ubuntu-latest (release) [Pandoc 2.14.2]	13m 44s
ubuntu-latest (release) [Pandoc 2.11.4]	9m 4s
ubuntu-latest (release) [Pandoc 2.7.3]	6m 34s
ubuntu-latest (release) [Pandoc 2.5]	10m 15s
ubuntu-latest (devel) [Pandoc 2.11.4]	20m 25s
ubuntu-latest (oldrel-1) [Pandoc 2.11.4]	15m 18s
ubuntu-latest (oldrel-2) [Pandoc 2.11.4]	11m 52s
ubuntu-latest (oldrel-3) [Pandoc 2.11.4]	13m 52s
	3h 4m 27s

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