packaging: also lower musllinux tag to 1_1

We don't know the exact lower bound, so better be too permissive than
restrictive.

Ideally, pip should also allow to override libc version tags, but it's
not obvious if/how this is supported.

setupsrc/pypdfium2_setup/packaging_base.py

@@ -179,9 +179,9 @@ def get_wheel_tag(pl_name):
     elif pl_name == PlatformNames.linux_arm32:
         return "manylinux_2_17_armv7l"
     elif pl_name == PlatformNames.linux_musl_x64:
-        return "musllinux_1_2_x86_64"
+        return "musllinux_1_1_x86_64"
     elif pl_name == PlatformNames.linux_musl_x86:
-        return "musllinux_1_2_i686"
+        return "musllinux_1_1_i686"
     elif pl_name == PlatformNames.windows_x64:
         return "win_amd64"
     elif pl_name == PlatformNames.windows_arm64:

tests_old/test_setup.py

@@ -51,8 +51,8 @@ def all_platnames():
     (PlatformNames.linux_x86,      "manylinux_2_17_i686"),
     (PlatformNames.linux_arm64,    "manylinux_2_17_aarch64"),
     (PlatformNames.linux_arm32,    "manylinux_2_17_armv7l"),
-    (PlatformNames.linux_musl_x64, "musllinux_1_2_x86_64"),
-    (PlatformNames.linux_musl_x86, "musllinux_1_2_i686"),
+    (PlatformNames.linux_musl_x64, "musllinux_1_1_x86_64"),
+    (PlatformNames.linux_musl_x86, "musllinux_1_1_i686"),
     (PlatformNames.darwin_x64,     "macosx_10_13_x86_64"),
     (PlatformNames.darwin_arm64,   "macosx_11_0_arm64"),
     (PlatformNames.windows_x64,    "win_amd64"),