test: Update suppressions for cppcheck 2.10

Some of these are valid, but we'll fix them in the soon to open 1.22.x
series. This should make the CI systems based on Debian unstable
checking author mode, get back to normal.

t/cppcheck/cppcheck.supp

@@ -11,6 +11,11 @@ variableScope
 // TODO: While perhaps valid there are many to handle right away.
 constParameter
 
+// TODO: Will fix in 1.22.x.
+badBitmaskCheck:lib/dpkg/fields.c
+identicalInnerCondition:lib/dpkg/fsys-hash.c
+knownConditionTrueFalse:lib/dpkg/tarfn.c
+
 // Ignore, this is an imported module.
 unusedStructMember:lib/compat/obstack.c
 nullPointerArithmetic:lib/compat/obstack.c
@@ -18,6 +23,9 @@ nullPointerArithmetic:lib/compat/obstack.c
 // Ignore, the code is used only for its binary artifacts.
 uninitMemberVar:*/Dpkg_Shlibs/patterns.cpp
 
+// BUG: False positive.
+unusedStructMember:lib/dpkg/compress.c
+
 // BUG: False positive, it gets triggered even with -Ilib.
 unknownMacro:lib/dpkg/string.h
 unknownMacro:utils/*.c
@@ -26,6 +34,10 @@ unknownMacro:utils/*.c
 syntaxError:lib/dpkg/t/*.c
 
 // BUG: False positive, does not understand non-returning functors.
+nullPointerArithmeticRedundantCheck:lib/dpkg/db-fsys-files.c
+nullPointerArithmeticRedundantCheck:lib/dpkg/db-fsys-override.c
+nullPointerRedundantCheck:lib/dpkg/db-fsys-override.c
+nullPointerRedundantCheck:lib/dpkg/ehandle.c
 nullPointerRedundantCheck:src/deb/build.c
 nullPointerRedundantCheck:src/main/enquiry.c
 nullPointerRedundantCheck:src/main/unpack.c