Upgrade the pip dependency from 25.2 to 26.0.

PiperOrigin-RevId: 868118573
Change-Id: I992e0c8b407777d98fa40b38c36fd0bbe9510086

Author: willinois

tools/distribution/requirements.txt

@@ -66,9 +66,9 @@ colorama==0.4.6 \
     --hash=sha256:4f1d9991f5acc0ca119f9d443620b77f9d6b33703e51011c16baf57afb285fc6
     # Added manually
 # The following packages are considered to be unsafe in a requirements file:
-pip==25.2 \
-    --hash=sha256:578283f006390f85bb6282dffb876454593d637f5d1be494b5202ce4877e71f2 \
-    --hash=sha256:6d67a2b4e7f14d8b31b8b52648866fa717f45a1eb70e83002f4331d07e953717
+pip==26.0 \
+    --hash=sha256:3ce220a0a17915972fbf1ab451baae1521c4539e778b28127efa79b974aff0fa \
+    --hash=sha256:98436feffb9e31bc9339cf369fd55d3331b1580b6a6f1173bacacddcf9c34754
     # via -r tools/distribution/requirements.in
 setuptools==80.9.0 \
     --hash=sha256:062d34222ad13e0cc312a4c02d73f059e86a4acbfbdea8f8f76b28c99f306922 \