feat(checker): Detect libicu 61, as found in msys/cygwin (#4737)

Author: qmfrederik

cve_bin_tool/checkers/icu.py

@@ -24,6 +24,7 @@ class IcuChecker(Checker):
     VERSION_PATTERNS = [
         r"icu(?:-|/)([0-9]+\.[0-9]+(\.[0-9]+)?)",
         r"ICU ([0-9]+\.[0-9]+(\.[0-9]+)?)",
+        r"icudt([0-9]+)_dat",
     ]
     VENDOR_PRODUCT = [
         ("icu-project", "international_components_for_unicode"),

test/condensed-downloads/libicu61-61.1-1.tar.xz.tar.gz

@@ -17,6 +17,16 @@
         "version": "68.2",
         "version_strings": ["icu/68.2"],
     },
+    {
+        "product": "international_components_for_unicode",
+        "version": "68.2",
+        "version_strings": ["icu/68.2"],
+    },
+    {
+        "product": "international_components_for_unicode",
+        "version": "62",
+        "version_strings": ["icudt62_dat"],
+    },
 ]
 package_test_data = [
     {
@@ -63,4 +73,11 @@
     #     "version": "2.6.2",
     #     "other_products": ["gcc"],
     # },
+    {
+        "url": "https://ftp-stud.hs-esslingen.de/pub/Mirrors/sources.redhat.com/cygwin/x86_64/release/icu/libicu61/",
+        "package_name": "libicu61-61.1-1.tar.xz",
+        "product": "international_components_for_unicode",
+        "version": "61",
+        "other_products": ["gcc"],
+    },
 ]

test/test_data/icu.py

@@ -14,7 +14,7 @@
         "package_name": "rh-nodejs14-nodejs-14.16.0-1.el7.x86_64.rpm",
         "product": "node.js",
         "version": "14.16.0",
-        "other_products": ["libuv", "zlib"],
+        "other_products": ["libuv", "zlib", "international_components_for_unicode"],
     },
     {
         "url": "http://ftp.debian.org/debian/pool/main/n/nodejs/",