Update rpminspect config with unicode rules

Related: RHEL-61964

rpminspect.yaml

@@ -10,3 +10,20 @@ doc:
     # Doc inspection generates massive output which crash RHEL CI
     ignore:
         - /usr/share/doc/rust/html/*
+
+unicode:
+    ignore:
+        # These files are known to contain forbidden unicode chars as
+        # they are tests for those.
+        - rustc-*-src/tests/ui/lint/issue-90614-accept-allow-text-direction-codepoint-in-comment-lint.rs
+        - rustc-*-src/tests/ui/parser/unicode-control-codepoints.rs
+        - rustc-*-src/compiler/rustc_lint/src/hidden_unicode_codepoints.rs
+        - rustc-*-src/compiler/rustc_lint_defs/src/builtin.rs
+        - rustc-*-src/vendor/idna/tests/IdnaTestV2.txt
+        - rustc-*-src/vendor/idna-*/tests/IdnaTestV2.txt
+        - rustc-*-src/vendor/mdbook*/tests/dummy_book/src/first/unicode.md
+        - rustc-*-src/vendor/mdbook*/tests/searchindex_fixture.json
+        - rustc-*-src/vendor/wast-*/tests/parse-fail/confusing-string?.wat
+        - rustc-*-src/vendor/wast-*/tests/parse-fail/confusing-block-comment?.wat
+        - rustc-*-src/vendor/wast-*/tests/parse-fail/confusing-line-comment?.wat
+        - rustc-*-src/src/llvm-project/clang-tools-extra/docs/clang-tidy/checks/misc/misleading-bidirectional.rst