Add June Matins readings for pre-1955 sanctoral saints

Ss. Basilides/Cyrinus/Nabor/Nazarius, St. Anthony of Padua, Ss. Gervase
and Protase, St. Silverius, and St. Paulinus of Nola.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

src/data/propers/nocturn-readings/st-silverius.yml

@@ -0,0 +1,40 @@
+# Matins Nocturn 2 reading for St. Silverius, Pope and Martyr (June 20) —
+# pre-1955-but-post-1617 (no SanctiM/06-20*.txt at all; the "t" suffix
+# variant at this date is an empty stub, not relevant).
+# web/www/horas/Latin/Sancti/06-20.txt, English/Sancti/06-20.txt. Single
+# lesson (simplex-feast Lectio93), no responsory in the source. The
+# English source has an evident stray-word artifact ("for defending Save
+# the heresy of Eutyches") — transcribed here as "the heresy of
+# Eutyches", dropping the stray "Save".
+id: st-silverius
+readings:
+  - nocturn: 2
+    isGospel: false
+    text:
+      la: >-
+        Silverius Campanus post Agapitum proxime Pontifex creatus est: cujus doctrina et sanctitas
+        illuxit in insectandis hæreticis, et constantis animi magnitudo perspecta est in tuendo
+        judicio Agapiti. Nam Anthimum, quem, quia Eutychianam hæresim defendebat, Agapitus ab
+        episcopatu Constantinopolitano deposuerat, cum a Theodora Augusta sæpissime rogatus esset,
+        restituere noluit. Quam ob rem irata mulier mandat Belisario ut Silverium mittat in
+        exsilium. Qui exsulavit in insula Pontia, unde his verbis scripsisse fertur ad Amatorem
+        episcopum: Sustentor pane tribulationis et aqua angustiæ; nec tamen dimisi, aut dimitto
+        officium meum. Et sane, brevi incommodis ærumnisque confectus, obdormivit in Domino,
+        duodecimo Kalendas Julii; Cujus corpus Romam delatum, et in basilica Vaticana depositum,
+        multis miraculis illustratum fuit. Præfuit Ecclesiæ annos tres et amplius, creatis mense
+        Decembri presbyteris tredecim, diaconis quinque, episcopis per diversa loca decem et novem.
+      en: >-
+        This Silverius was a native of Campania, and succeeded Agapitus in the Papacy. His
+        orthodoxy and holiness shone brightest in his onslaughts upon heretics, and he showed
+        admirable firmness in upholding a sentence by Agapitus. Agapitus had deposed Anthimus from
+        the Patriarchate of Constantinople for defending the heresy of Eutyches; and Silverius would
+        never allow of his restoration, although the Empress Theodora repeatedly asked him to do so.
+        The woman was enraged at him on this account, and ordered Belisarius to send Silverius into
+        exile. He was accordingly banished to the island of Ponza, whence he is said to have written
+        these words to Bishop Amator: I am fed upon the bread of tribulation and the water of
+        affliction, but nevertheless I have not given up, and I will not give up, doing my duty. But
+        sickness and the hardships of his exile soon broke his strength, and he fell asleep in the
+        Lord upon the 20th day of June. Many miracles shed a lustre upon his grave. He ruled the
+        Church for more than three years, and ordained in the month of December thirteen Priests,
+        five Deacons, and nineteen Bishops for diverse Sees.
+    status: { la: verified, en: verified }