[CI] Pin Analog-inc/asciidoctor-action version (#602)

Author: straight-shoota

.github/workflows/ci.yml

@@ -74,7 +74,7 @@ jobs:
       - name: Download source
         uses: actions/checkout@v2
       - name: Build manpages
-        uses: Analog-inc/asciidoctor-action@master
+        uses: Analog-inc/asciidoctor-action@v1.3.1
         with:
           shellcommand: "make -B manpages SOURCE_DATE_EPOCH=\"$(date +%s --utc --date \"$(grep -m1 -o -E 'Date: .*' man/shard.yml.5 | cut -d' ' -f2)\")\""
       - name: Ensure no changes

man/shard.yml.5

@@ -1,7 +1,7 @@
 '\" t
 .\"     Title: shard.yml
 .\"    Author: [see the "AUTHOR(S)" section]
-.\" Generator: Asciidoctor 2.0.17
+.\" Generator: Asciidoctor 2.0.20
 .\"      Date: 2023-04-07
 .\"    Manual: File Formats
 .\"    Source: shards 0.17.3

man/shards.1

@@ -1,7 +1,7 @@
 '\" t
 .\"     Title: shards
 .\"    Author: [see the "AUTHOR(S)" section]
-.\" Generator: Asciidoctor 2.0.17
+.\" Generator: Asciidoctor 2.0.20
 .\"      Date: 2023-04-07
 .\"    Manual: Shards Manual
 .\"    Source: shards 0.17.3